Home / 210,963.20-291,128.73-115,469.06

Finding the Fourth Proportional to 210,963.20, 291,128.73 and 115,469.06

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Solution

The fourth proportional to 210,963.20, 291,128.73 and 115,469.06 is: 159,347.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,963.20 : 291,128.73 = 115,469.06 : x
  2. Step 2: Convert to fraction form
    210,963.20/291,128.73 = 115,469.06/x
  3. Step 3: Cross multiply
    210,963.20x = 291,128.73 × 115,469.06
  4. Step 4: Simplify right side
    210,963.20x = 33,616,360,792.09
  5. Step 5: Solve for x
    x = 33,616,360,792.09/210,963.20
  6. Step 6: Final answer
    x = 159,347.04

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1.5x scale

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.