Home / 125,231.06-172,836.58-77,499.78

Finding the Fourth Proportional to 125,231.06, 172,836.58 and 77,499.78

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Solution

The fourth proportional to 125,231.06, 172,836.58 and 77,499.78 is: 106,960.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,231.06 : 172,836.58 = 77,499.78 : x
  2. Step 2: Convert to fraction form
    125,231.06/172,836.58 = 77,499.78/x
  3. Step 3: Cross multiply
    125,231.06x = 172,836.58 × 77,499.78
  4. Step 4: Simplify right side
    125,231.06x = 13,394,796,925.95
  5. Step 5: Solve for x
    x = 13,394,796,925.95/125,231.06
  6. Step 6: Final answer
    x = 106,960.66

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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.