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Finding the Fourth Proportional to 130,177.60, 195,266.40 and 85,854.40

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Solution

The fourth proportional to 130,177.60, 195,266.40 and 85,854.40 is: 128,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,177.60 : 195,266.40 = 85,854.40 : x
  2. Step 2: Convert to fraction form
    130,177.60/195,266.40 = 85,854.40/x
  3. Step 3: Cross multiply
    130,177.60x = 195,266.40 × 85,854.40
  4. Step 4: Simplify right side
    130,177.60x = 16,764,479,612.16
  5. Step 5: Solve for x
    x = 16,764,479,612.16/130,177.60
  6. Step 6: Final answer
    x = 128,781.60

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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.