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Finding the Fourth Proportional to 100,700.01, 138,913.67 and 60,394.41

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Solution

The fourth proportional to 100,700.01, 138,913.67 and 60,394.41 is: 83,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,700.01 : 138,913.67 = 60,394.41 : x
  2. Step 2: Convert to fraction form
    100,700.01/138,913.67 = 60,394.41/x
  3. Step 3: Cross multiply
    100,700.01x = 138,913.67 × 60,394.41
  4. Step 4: Simplify right side
    100,700.01x = 8,389,608,838.61
  5. Step 5: Solve for x
    x = 8,389,608,838.61/100,700.01
  6. Step 6: Final answer
    x = 83,312.89

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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.