Home / 211,148,741,912.31-291,395,732,801.54-130,978,528,721.91

Finding the Fourth Proportional to 211,148,741,912.31, 291,395,732,801.54 and 130,978,528,721.91

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Solution

The fourth proportional to 211,148,741,912.31, 291,395,732,801.54 and 130,978,528,721.91 is: 180,756,863,680.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,148,741,912.31 : 291,395,732,801.54 = 130,978,528,721.91 : x
  2. Step 2: Convert to fraction form
    211,148,741,912.31/291,395,732,801.54 = 130,978,528,721.91/x
  3. Step 3: Cross multiply
    211,148,741,912.31x = 291,395,732,801.54 × 130,978,528,721.91
  4. Step 4: Simplify right side
    211,148,741,912.31x = 38,166,584,358,188,512,968,704
  5. Step 5: Solve for x
    x = 38,166,584,358,188,512,968,704/211,148,741,912.31
  6. Step 6: Final answer
    x = 180,756,863,680.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.