Home / 125,461.49-173,170.04-77,687.69

Finding the Fourth Proportional to 125,461.49, 173,170.04 and 77,687.69

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Solution

The fourth proportional to 125,461.49, 173,170.04 and 77,687.69 is: 107,229.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,461.49 : 173,170.04 = 77,687.69 : x
  2. Step 2: Convert to fraction form
    125,461.49/173,170.04 = 77,687.69/x
  3. Step 3: Cross multiply
    125,461.49x = 173,170.04 × 77,687.69
  4. Step 4: Simplify right side
    125,461.49x = 13,453,179,130.52
  5. Step 5: Solve for x
    x = 13,453,179,130.52/125,461.49
  6. Step 6: Final answer
    x = 107,229.55

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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.