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Finding the Fourth Proportional to 159,990.92, 220,801.14 and 88,378.76

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Solution

The fourth proportional to 159,990.92, 220,801.14 and 88,378.76 is: 121,970.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,990.92 : 220,801.14 = 88,378.76 : x
  2. Step 2: Convert to fraction form
    159,990.92/220,801.14 = 88,378.76/x
  3. Step 3: Cross multiply
    159,990.92x = 220,801.14 × 88,378.76
  4. Step 4: Simplify right side
    159,990.92x = 19,514,130,959.79
  5. Step 5: Solve for x
    x = 19,514,130,959.79/159,990.92
  6. Step 6: Final answer
    x = 121,970.24

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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.