Home / 129,414.03-178,590.99-72,825.40

Finding the Fourth Proportional to 129,414.03, 178,590.99 and 72,825.40

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Solution

The fourth proportional to 129,414.03, 178,590.99 and 72,825.40 is: 100,498.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,414.03 : 178,590.99 = 72,825.40 : x
  2. Step 2: Convert to fraction form
    129,414.03/178,590.99 = 72,825.40/x
  3. Step 3: Cross multiply
    129,414.03x = 178,590.99 × 72,825.40
  4. Step 4: Simplify right side
    129,414.03x = 13,005,960,283.15
  5. Step 5: Solve for x
    x = 13,005,960,283.15/129,414.03
  6. Step 6: Final answer
    x = 100,498.84

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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.