Home / 129,052.90-178,242.02-85,961.40

Finding the Fourth Proportional to 129,052.90, 178,242.02 and 85,961.40

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Solution

The fourth proportional to 129,052.90, 178,242.02 and 85,961.40 is: 118,726.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,052.90 : 178,242.02 = 85,961.40 : x
  2. Step 2: Convert to fraction form
    129,052.90/178,242.02 = 85,961.40/x
  3. Step 3: Cross multiply
    129,052.90x = 178,242.02 × 85,961.40
  4. Step 4: Simplify right side
    129,052.90x = 15,321,933,804.78
  5. Step 5: Solve for x
    x = 15,321,933,804.78/129,052.90
  6. Step 6: Final answer
    x = 118,726.00

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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.