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Finding the Fourth Proportional to 159,518.80, 220,145.61 and 87,898.74

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Solution

The fourth proportional to 159,518.80, 220,145.61 and 87,898.74 is: 121,305.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,518.80 : 220,145.61 = 87,898.74 : x
  2. Step 2: Convert to fraction form
    159,518.80/220,145.61 = 87,898.74/x
  3. Step 3: Cross multiply
    159,518.80x = 220,145.61 × 87,898.74
  4. Step 4: Simplify right side
    159,518.80x = 19,350,521,735.53
  5. Step 5: Solve for x
    x = 19,350,521,735.53/159,518.80
  6. Step 6: Final answer
    x = 121,305.59

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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.