Home / 115,630.47-159,549.64-64,626.90

Finding the Fourth Proportional to 115,630.47, 159,549.64 and 64,626.90

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Solution

The fourth proportional to 115,630.47, 159,549.64 and 64,626.90 is: 89,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,630.47 : 159,549.64 = 64,626.90 : x
  2. Step 2: Convert to fraction form
    115,630.47/159,549.64 = 64,626.90/x
  3. Step 3: Cross multiply
    115,630.47x = 159,549.64 × 64,626.90
  4. Step 4: Simplify right side
    115,630.47x = 10,311,198,629.32
  5. Step 5: Solve for x
    x = 10,311,198,629.32/115,630.47
  6. Step 6: Final answer
    x = 89,173.72

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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.