Home / 129,296.40-178,426.88-71,935.12

Finding the Fourth Proportional to 129,296.40, 178,426.88 and 71,935.12

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Solution

The fourth proportional to 129,296.40, 178,426.88 and 71,935.12 is: 99,269.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,296.40 : 178,426.88 = 71,935.12 : x
  2. Step 2: Convert to fraction form
    129,296.40/178,426.88 = 71,935.12/x
  3. Step 3: Cross multiply
    129,296.40x = 178,426.88 × 71,935.12
  4. Step 4: Simplify right side
    129,296.40x = 12,835,159,024.03
  5. Step 5: Solve for x
    x = 12,835,159,024.03/129,296.40
  6. Step 6: Final answer
    x = 99,269.27

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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.