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Finding the Fourth Proportional to 123,602.04, 170,572.12 and 72,616.88

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Solution

The fourth proportional to 123,602.04, 170,572.12 and 72,616.88 is: 100,212.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,602.04 : 170,572.12 = 72,616.88 : x
  2. Step 2: Convert to fraction form
    123,602.04/170,572.12 = 72,616.88/x
  3. Step 3: Cross multiply
    123,602.04x = 170,572.12 × 72,616.88
  4. Step 4: Simplify right side
    123,602.04x = 12,386,415,169.39
  5. Step 5: Solve for x
    x = 12,386,415,169.39/123,602.04
  6. Step 6: Final answer
    x = 100,212.06

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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.