Home / 154,809,779.72-213,637,530.89-85,195,160.60

Finding the Fourth Proportional to 154,809,779.72, 213,637,530.89 and 85,195,160.60

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Solution

The fourth proportional to 154,809,779.72, 213,637,530.89 and 85,195,160.60 is: 117,569,340.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,809,779.72 : 213,637,530.89 = 85,195,160.60 : x
  2. Step 2: Convert to fraction form
    154,809,779.72/213,637,530.89 = 85,195,160.60/x
  3. Step 3: Cross multiply
    154,809,779.72x = 213,637,530.89 × 85,195,160.60
  4. Step 4: Simplify right side
    154,809,779.72x = 18,200,883,753,505,812
  5. Step 5: Solve for x
    x = 18,200,883,753,505,812/154,809,779.72
  6. Step 6: Final answer
    x = 117,569,340.82

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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.