Home / 115,781.32-159,784.96-64,793.62

Finding the Fourth Proportional to 115,781.32, 159,784.96 and 64,793.62

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Solution

The fourth proportional to 115,781.32, 159,784.96 and 64,793.62 is: 89,418.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,781.32 : 159,784.96 = 64,793.62 : x
  2. Step 2: Convert to fraction form
    115,781.32/159,784.96 = 64,793.62/x
  3. Step 3: Cross multiply
    115,781.32x = 159,784.96 × 64,793.62
  4. Step 4: Simplify right side
    115,781.32x = 10,353,045,979.96
  5. Step 5: Solve for x
    x = 10,353,045,979.96/115,781.32
  6. Step 6: Final answer
    x = 89,418.97

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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.