Home / 100,507.43-138,765.15-62,307.80

Finding the Fourth Proportional to 100,507.43, 138,765.15 and 62,307.80

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Solution

The fourth proportional to 100,507.43, 138,765.15 and 62,307.80 is: 86,025.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,507.43 : 138,765.15 = 62,307.80 : x
  2. Step 2: Convert to fraction form
    100,507.43/138,765.15 = 62,307.80/x
  3. Step 3: Cross multiply
    100,507.43x = 138,765.15 × 62,307.80
  4. Step 4: Simplify right side
    100,507.43x = 8,646,151,213.17
  5. Step 5: Solve for x
    x = 8,646,151,213.17/100,507.43
  6. Step 6: Final answer
    x = 86,025.00

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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.