Home / 102,528.80-153,793.20-72,785.60

Finding the Fourth Proportional to 102,528.80, 153,793.20 and 72,785.60

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Solution

The fourth proportional to 102,528.80, 153,793.20 and 72,785.60 is: 109,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,528.80 : 153,793.20 = 72,785.60 : x
  2. Step 2: Convert to fraction form
    102,528.80/153,793.20 = 72,785.60/x
  3. Step 3: Cross multiply
    102,528.80x = 153,793.20 × 72,785.60
  4. Step 4: Simplify right side
    102,528.80x = 11,193,930,337.92
  5. Step 5: Solve for x
    x = 11,193,930,337.92/102,528.80
  6. Step 6: Final answer
    x = 109,178.40

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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.