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Finding the Fourth Proportional to 129,951.21, 179,332.65 and 70,335.21

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Solution

The fourth proportional to 129,951.21, 179,332.65 and 70,335.21 is: 97,062.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.21 : 179,332.65 = 70,335.21 : x
  2. Step 2: Convert to fraction form
    129,951.21/179,332.65 = 70,335.21/x
  3. Step 3: Cross multiply
    129,951.21x = 179,332.65 × 70,335.21
  4. Step 4: Simplify right side
    129,951.21x = 12,613,399,597.61
  5. Step 5: Solve for x
    x = 12,613,399,597.61/129,951.21
  6. Step 6: Final answer
    x = 97,062.58

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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.