Home / 100,642.17-138,893.45-60,355.20

Finding the Fourth Proportional to 100,642.17, 138,893.45 and 60,355.20

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Solution

The fourth proportional to 100,642.17, 138,893.45 and 60,355.20 is: 83,294.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,642.17 : 138,893.45 = 60,355.20 : x
  2. Step 2: Convert to fraction form
    100,642.17/138,893.45 = 60,355.20/x
  3. Step 3: Cross multiply
    100,642.17x = 138,893.45 × 60,355.20
  4. Step 4: Simplify right side
    100,642.17x = 8,382,941,953.44
  5. Step 5: Solve for x
    x = 8,382,941,953.44/100,642.17
  6. Step 6: Final answer
    x = 83,294.53

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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.