Home / 129,252.64-178,353.12-71,877.60

Finding the Fourth Proportional to 129,252.64, 178,353.12 and 71,877.60

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Solution

The fourth proportional to 129,252.64, 178,353.12 and 71,877.60 is: 99,182.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,252.64 : 178,353.12 = 71,877.60 : x
  2. Step 2: Convert to fraction form
    129,252.64/178,353.12 = 71,877.60/x
  3. Step 3: Cross multiply
    129,252.64x = 178,353.12 × 71,877.60
  4. Step 4: Simplify right side
    129,252.64x = 12,819,594,218.11
  5. Step 5: Solve for x
    x = 12,819,594,218.11/129,252.64
  6. Step 6: Final answer
    x = 99,182.46

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1.5x scale

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.