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Finding the Fourth Proportional to 159,598.19, 220,246.99 and 87,980.77

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Solution

The fourth proportional to 159,598.19, 220,246.99 and 87,980.77 is: 121,414.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,598.19 : 220,246.99 = 87,980.77 : x
  2. Step 2: Convert to fraction form
    159,598.19/220,246.99 = 87,980.77/x
  3. Step 3: Cross multiply
    159,598.19x = 220,246.99 × 87,980.77
  4. Step 4: Simplify right side
    159,598.19x = 19,377,499,770.38
  5. Step 5: Solve for x
    x = 19,377,499,770.38/159,598.19
  6. Step 6: Final answer
    x = 121,414.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.