Home / 125,134.35-172,641.42-86,883.72

Finding the Fourth Proportional to 125,134.35, 172,641.42 and 86,883.72

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Solution

The fourth proportional to 125,134.35, 172,641.42 and 86,883.72 is: 119,869.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,134.35 : 172,641.42 = 86,883.72 : x
  2. Step 2: Convert to fraction form
    125,134.35/172,641.42 = 86,883.72/x
  3. Step 3: Cross multiply
    125,134.35x = 172,641.42 × 86,883.72
  4. Step 4: Simplify right side
    125,134.35x = 14,999,728,795.68
  5. Step 5: Solve for x
    x = 14,999,728,795.68/125,134.35
  6. Step 6: Final answer
    x = 119,869.00

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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.