Home / 115,310.64-159,122.61-64,328.70

Finding the Fourth Proportional to 115,310.64, 159,122.61 and 64,328.70

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Solution

The fourth proportional to 115,310.64, 159,122.61 and 64,328.70 is: 88,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,310.64 : 159,122.61 = 64,328.70 : x
  2. Step 2: Convert to fraction form
    115,310.64/159,122.61 = 64,328.70/x
  3. Step 3: Cross multiply
    115,310.64x = 159,122.61 × 64,328.70
  4. Step 4: Simplify right side
    115,310.64x = 10,236,150,641.91
  5. Step 5: Solve for x
    x = 10,236,150,641.91/115,310.64
  6. Step 6: Final answer
    x = 88,770.22

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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.