Home / 129,254.27-178,349.09-71,886.06

Finding the Fourth Proportional to 129,254.27, 178,349.09 and 71,886.06

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Solution

The fourth proportional to 129,254.27, 178,349.09 and 71,886.06 is: 99,190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,254.27 : 178,349.09 = 71,886.06 : x
  2. Step 2: Convert to fraction form
    129,254.27/178,349.09 = 71,886.06/x
  3. Step 3: Cross multiply
    129,254.27x = 178,349.09 × 71,886.06
  4. Step 4: Simplify right side
    129,254.27x = 12,820,813,025.26
  5. Step 5: Solve for x
    x = 12,820,813,025.26/129,254.27
  6. Step 6: Final answer
    x = 99,190.64

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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.