Home / 125,028.12-172,542.86-68,439.50

Finding the Fourth Proportional to 125,028.12, 172,542.86 and 68,439.50

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Solution

The fourth proportional to 125,028.12, 172,542.86 and 68,439.50 is: 94,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,028.12 : 172,542.86 = 68,439.50 : x
  2. Step 2: Convert to fraction form
    125,028.12/172,542.86 = 68,439.50/x
  3. Step 3: Cross multiply
    125,028.12x = 172,542.86 × 68,439.50
  4. Step 4: Simplify right side
    125,028.12x = 11,808,747,066.97
  5. Step 5: Solve for x
    x = 11,808,747,066.97/125,028.12
  6. Step 6: Final answer
    x = 94,448.73

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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.