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Finding the Fourth Proportional to 159,585.60, 239,320.80 and 80,673.60

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Solution

The fourth proportional to 159,585.60, 239,320.80 and 80,673.60 is: 120,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,585.60 : 239,320.80 = 80,673.60 : x
  2. Step 2: Convert to fraction form
    159,585.60/239,320.80 = 80,673.60/x
  3. Step 3: Cross multiply
    159,585.60x = 239,320.80 × 80,673.60
  4. Step 4: Simplify right side
    159,585.60x = 19,306,870,490.88
  5. Step 5: Solve for x
    x = 19,306,870,490.88/159,585.60
  6. Step 6: Final answer
    x = 120,981.28

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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.