Home / 129,127.34-178,194.66-72,537.50

Finding the Fourth Proportional to 129,127.34, 178,194.66 and 72,537.50

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Solution

The fourth proportional to 129,127.34, 178,194.66 and 72,537.50 is: 100,101.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,127.34 : 178,194.66 = 72,537.50 : x
  2. Step 2: Convert to fraction form
    129,127.34/178,194.66 = 72,537.50/x
  3. Step 3: Cross multiply
    129,127.34x = 178,194.66 × 72,537.50
  4. Step 4: Simplify right side
    129,127.34x = 12,925,795,149.75
  5. Step 5: Solve for x
    x = 12,925,795,149.75/129,127.34
  6. Step 6: Final answer
    x = 100,101.15

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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.