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Finding the Fourth Proportional to 67,152.68, 100,159.06 and 65,971.88

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Solution

The fourth proportional to 67,152.68, 100,159.06 and 65,971.88 is: 98,397.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,152.68 : 100,159.06 = 65,971.88 : x
  2. Step 2: Convert to fraction form
    67,152.68/100,159.06 = 65,971.88/x
  3. Step 3: Cross multiply
    67,152.68x = 100,159.06 × 65,971.88
  4. Step 4: Simplify right side
    67,152.68x = 6,607,681,487.23
  5. Step 5: Solve for x
    x = 6,607,681,487.23/67,152.68
  6. Step 6: Final answer
    x = 98,397.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.