Home / 124,839.80-172,230.51-79,509.66

Finding the Fourth Proportional to 124,839.80, 172,230.51 and 79,509.66

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Solution

The fourth proportional to 124,839.80, 172,230.51 and 79,509.66 is: 109,692.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,839.80 : 172,230.51 = 79,509.66 : x
  2. Step 2: Convert to fraction form
    124,839.80/172,230.51 = 79,509.66/x
  3. Step 3: Cross multiply
    124,839.80x = 172,230.51 × 79,509.66
  4. Step 4: Simplify right side
    124,839.80x = 13,693,989,291.73
  5. Step 5: Solve for x
    x = 13,693,989,291.73/124,839.80
  6. Step 6: Final answer
    x = 109,692.50

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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.