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Finding the Fourth Proportional to 129,013.60, 193,520.40 and 97,520.80

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Solution

The fourth proportional to 129,013.60, 193,520.40 and 97,520.80 is: 146,281.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,013.60 : 193,520.40 = 97,520.80 : x
  2. Step 2: Convert to fraction form
    129,013.60/193,520.40 = 97,520.80/x
  3. Step 3: Cross multiply
    129,013.60x = 193,520.40 × 97,520.80
  4. Step 4: Simplify right side
    129,013.60x = 18,872,264,224.32
  5. Step 5: Solve for x
    x = 18,872,264,224.32/129,013.60
  6. Step 6: Final answer
    x = 146,281.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.