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Finding the Fourth Proportional to 129,662.80, 178,761.36 and 97,259.68

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Solution

The fourth proportional to 129,662.80, 178,761.36 and 97,259.68 is: 134,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,662.80 : 178,761.36 = 97,259.68 : x
  2. Step 2: Convert to fraction form
    129,662.80/178,761.36 = 97,259.68/x
  3. Step 3: Cross multiply
    129,662.80x = 178,761.36 × 97,259.68
  4. Step 4: Simplify right side
    129,662.80x = 17,386,272,669.96
  5. Step 5: Solve for x
    x = 17,386,272,669.96/129,662.80
  6. Step 6: Final answer
    x = 134,088.36

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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.