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Finding the Fourth Proportional to 125,249.74, 172,870.74 and 115,162.24

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Solution

The fourth proportional to 125,249.74, 172,870.74 and 115,162.24 is: 158,947.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,249.74 : 172,870.74 = 115,162.24 : x
  2. Step 2: Convert to fraction form
    125,249.74/172,870.74 = 115,162.24/x
  3. Step 3: Cross multiply
    125,249.74x = 172,870.74 × 115,162.24
  4. Step 4: Simplify right side
    125,249.74x = 19,908,181,648.86
  5. Step 5: Solve for x
    x = 19,908,181,648.86/125,249.74
  6. Step 6: Final answer
    x = 158,947.89

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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.