Home / 115,038.16-158,751.38-64,049.78

Finding the Fourth Proportional to 115,038.16, 158,751.38 and 64,049.78

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Solution

The fourth proportional to 115,038.16, 158,751.38 and 64,049.78 is: 88,387.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,038.16 : 158,751.38 = 64,049.78 : x
  2. Step 2: Convert to fraction form
    115,038.16/158,751.38 = 64,049.78/x
  3. Step 3: Cross multiply
    115,038.16x = 158,751.38 × 64,049.78
  4. Step 4: Simplify right side
    115,038.16x = 10,167,991,520.70
  5. Step 5: Solve for x
    x = 10,167,991,520.70/115,038.16
  6. Step 6: Final answer
    x = 88,387.99

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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.