Home / 129,233.04-178,338.36-72,648.04

Finding the Fourth Proportional to 129,233.04, 178,338.36 and 72,648.04

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Solution

The fourth proportional to 129,233.04, 178,338.36 and 72,648.04 is: 100,252.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,233.04 : 178,338.36 = 72,648.04 : x
  2. Step 2: Convert to fraction form
    129,233.04/178,338.36 = 72,648.04/x
  3. Step 3: Cross multiply
    129,233.04x = 178,338.36 × 72,648.04
  4. Step 4: Simplify right side
    129,233.04x = 12,955,932,310.81
  5. Step 5: Solve for x
    x = 12,955,932,310.81/129,233.04
  6. Step 6: Final answer
    x = 100,252.48

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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.