Home / 125,158.65-172,716.75-77,399.43

Finding the Fourth Proportional to 125,158.65, 172,716.75 and 77,399.43

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Solution

The fourth proportional to 125,158.65, 172,716.75 and 77,399.43 is: 106,809.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,158.65 : 172,716.75 = 77,399.43 : x
  2. Step 2: Convert to fraction form
    125,158.65/172,716.75 = 77,399.43/x
  3. Step 3: Cross multiply
    125,158.65x = 172,716.75 × 77,399.43
  4. Step 4: Simplify right side
    125,158.65x = 13,368,178,001.45
  5. Step 5: Solve for x
    x = 13,368,178,001.45/125,158.65
  6. Step 6: Final answer
    x = 106,809.86

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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.