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Finding the Fourth Proportional to 159,475.88, 220,314.66 and 128,803.20

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Solution

The fourth proportional to 159,475.88, 220,314.66 and 128,803.20 is: 177,940.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,475.88 : 220,314.66 = 128,803.20 : x
  2. Step 2: Convert to fraction form
    159,475.88/220,314.66 = 128,803.20/x
  3. Step 3: Cross multiply
    159,475.88x = 220,314.66 × 128,803.20
  4. Step 4: Simplify right side
    159,475.88x = 28,377,233,214.91
  5. Step 5: Solve for x
    x = 28,377,233,214.91/159,475.88
  6. Step 6: Final answer
    x = 177,940.60

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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.