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Finding the Fourth Proportional to 131,712.60, 197,568.90 and 96,720.60

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Solution

The fourth proportional to 131,712.60, 197,568.90 and 96,720.60 is: 145,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,712.60 : 197,568.90 = 96,720.60 : x
  2. Step 2: Convert to fraction form
    131,712.60/197,568.90 = 96,720.60/x
  3. Step 3: Cross multiply
    131,712.60x = 197,568.90 × 96,720.60
  4. Step 4: Simplify right side
    131,712.60x = 19,108,982,549.34
  5. Step 5: Solve for x
    x = 19,108,982,549.34/131,712.60
  6. Step 6: Final answer
    x = 145,080.90

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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.