Home / 129,242.39-178,328.08-75,517.02

Finding the Fourth Proportional to 129,242.39, 178,328.08 and 75,517.02

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Solution

The fourth proportional to 129,242.39, 178,328.08 and 75,517.02 is: 104,198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,242.39 : 178,328.08 = 75,517.02 : x
  2. Step 2: Convert to fraction form
    129,242.39/178,328.08 = 75,517.02/x
  3. Step 3: Cross multiply
    129,242.39x = 178,328.08 × 75,517.02
  4. Step 4: Simplify right side
    129,242.39x = 13,466,804,776.77
  5. Step 5: Solve for x
    x = 13,466,804,776.77/129,242.39
  6. Step 6: Final answer
    x = 104,198.05

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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.