Home / 129,027.05-178,068.55-71,677.52

Finding the Fourth Proportional to 129,027.05, 178,068.55 and 71,677.52

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Solution

The fourth proportional to 129,027.05, 178,068.55 and 71,677.52 is: 98,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,027.05 : 178,068.55 = 71,677.52 : x
  2. Step 2: Convert to fraction form
    129,027.05/178,068.55 = 71,677.52/x
  3. Step 3: Cross multiply
    129,027.05x = 178,068.55 × 71,677.52
  4. Step 4: Simplify right side
    129,027.05x = 12,763,512,054.00
  5. Step 5: Solve for x
    x = 12,763,512,054.00/129,027.05
  6. Step 6: Final answer
    x = 98,921.21

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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.