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Finding the Fourth Proportional to 83,402.10, 125,103.15 and 74,070.90

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Solution

The fourth proportional to 83,402.10, 125,103.15 and 74,070.90 is: 111,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,402.10 : 125,103.15 = 74,070.90 : x
  2. Step 2: Convert to fraction form
    83,402.10/125,103.15 = 74,070.90/x
  3. Step 3: Cross multiply
    83,402.10x = 125,103.15 × 74,070.90
  4. Step 4: Simplify right side
    83,402.10x = 9,266,502,913.34
  5. Step 5: Solve for x
    x = 9,266,502,913.34/83,402.10
  6. Step 6: Final answer
    x = 111,106.35

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1.5x scale

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.