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Finding the Fourth Proportional to 112,713.96, 155,545.02 and 64,966.98

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Solution

The fourth proportional to 112,713.96, 155,545.02 and 64,966.98 is: 89,654.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,713.96 : 155,545.02 = 64,966.98 : x
  2. Step 2: Convert to fraction form
    112,713.96/155,545.02 = 64,966.98/x
  3. Step 3: Cross multiply
    112,713.96x = 155,545.02 × 64,966.98
  4. Step 4: Simplify right side
    112,713.96x = 10,105,290,203.44
  5. Step 5: Solve for x
    x = 10,105,290,203.44/112,713.96
  6. Step 6: Final answer
    x = 89,654.29

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1.5x scale

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.