Home / 115,724.32-159,707.60-64,753.84

Finding the Fourth Proportional to 115,724.32, 159,707.60 and 64,753.84

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Solution

The fourth proportional to 115,724.32, 159,707.60 and 64,753.84 is: 89,364.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,724.32 : 159,707.60 = 64,753.84 : x
  2. Step 2: Convert to fraction form
    115,724.32/159,707.60 = 64,753.84/x
  3. Step 3: Cross multiply
    115,724.32x = 159,707.60 × 64,753.84
  4. Step 4: Simplify right side
    115,724.32x = 10,341,680,377.18
  5. Step 5: Solve for x
    x = 10,341,680,377.18/115,724.32
  6. Step 6: Final answer
    x = 89,364.80

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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.