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Finding the Fourth Proportional to 88,708.60, 133,062.90 and 83,459.80

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Solution

The fourth proportional to 88,708.60, 133,062.90 and 83,459.80 is: 125,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,708.60 : 133,062.90 = 83,459.80 : x
  2. Step 2: Convert to fraction form
    88,708.60/133,062.90 = 83,459.80/x
  3. Step 3: Cross multiply
    88,708.60x = 133,062.90 × 83,459.80
  4. Step 4: Simplify right side
    88,708.60x = 11,105,403,021.42
  5. Step 5: Solve for x
    x = 11,105,403,021.42/88,708.60
  6. Step 6: Final answer
    x = 125,189.70

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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.