Home / 287,862,037.50-431,794,321.25-91,126,417.18

Finding the Fourth Proportional to 287,862,037.50, 431,794,321.25 and 91,126,417.18

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Solution

The fourth proportional to 287,862,037.50, 431,794,321.25 and 91,126,417.18 is: 136,690,026.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,862,037.50 : 431,794,321.25 = 91,126,417.18 : x
  2. Step 2: Convert to fraction form
    287,862,037.50/431,794,321.25 = 91,126,417.18/x
  3. Step 3: Cross multiply
    287,862,037.50x = 431,794,321.25 × 91,126,417.18
  4. Step 4: Simplify right side
    287,862,037.50x = 39,347,869,454,182,440
  5. Step 5: Solve for x
    x = 39,347,869,454,182,440/287,862,037.50
  6. Step 6: Final answer
    x = 136,690,026.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.