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Finding the Fourth Proportional to 123,727.08, 170,747.16 and 72,730.46

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Solution

The fourth proportional to 123,727.08, 170,747.16 and 72,730.46 is: 100,370.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,727.08 : 170,747.16 = 72,730.46 : x
  2. Step 2: Convert to fraction form
    123,727.08/170,747.16 = 72,730.46/x
  3. Step 3: Cross multiply
    123,727.08x = 170,747.16 × 72,730.46
  4. Step 4: Simplify right side
    123,727.08x = 12,418,518,636.76
  5. Step 5: Solve for x
    x = 12,418,518,636.76/123,727.08
  6. Step 6: Final answer
    x = 100,370.26

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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.