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Finding the Fourth Proportional to 129,467.52, 178,562.88 and 84,746.88

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Solution

The fourth proportional to 129,467.52, 178,562.88 and 84,746.88 is: 116,883.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,467.52 : 178,562.88 = 84,746.88 : x
  2. Step 2: Convert to fraction form
    129,467.52/178,562.88 = 84,746.88/x
  3. Step 3: Cross multiply
    129,467.52x = 178,562.88 × 84,746.88
  4. Step 4: Simplify right side
    129,467.52x = 15,132,646,963.81
  5. Step 5: Solve for x
    x = 15,132,646,963.81/129,467.52
  6. Step 6: Final answer
    x = 116,883.73

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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.