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Finding the Fourth Proportional to 112,937.55, 155,841.13 and 65,206.68

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Solution

The fourth proportional to 112,937.55, 155,841.13 and 65,206.68 is: 89,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,937.55 : 155,841.13 = 65,206.68 : x
  2. Step 2: Convert to fraction form
    112,937.55/155,841.13 = 65,206.68/x
  3. Step 3: Cross multiply
    112,937.55x = 155,841.13 × 65,206.68
  4. Step 4: Simplify right side
    112,937.55x = 10,161,882,694.75
  5. Step 5: Solve for x
    x = 10,161,882,694.75/112,937.55
  6. Step 6: Final answer
    x = 89,977.89

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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.