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Finding the Fourth Proportional to 159,678.76, 220,353.78 and 88,065.40

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Solution

The fourth proportional to 159,678.76, 220,353.78 and 88,065.40 is: 121,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,678.76 : 220,353.78 = 88,065.40 : x
  2. Step 2: Convert to fraction form
    159,678.76/220,353.78 = 88,065.40/x
  3. Step 3: Cross multiply
    159,678.76x = 220,353.78 × 88,065.40
  4. Step 4: Simplify right side
    159,678.76x = 19,405,543,777.21
  5. Step 5: Solve for x
    x = 19,405,543,777.21/159,678.76
  6. Step 6: Final answer
    x = 121,528.65

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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.