Home / 125,140.94-172,660.10-71,406.62

Finding the Fourth Proportional to 125,140.94, 172,660.10 and 71,406.62

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Solution

The fourth proportional to 125,140.94, 172,660.10 and 71,406.62 is: 98,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,140.94 : 172,660.10 = 71,406.62 : x
  2. Step 2: Convert to fraction form
    125,140.94/172,660.10 = 71,406.62/x
  3. Step 3: Cross multiply
    125,140.94x = 172,660.10 × 71,406.62
  4. Step 4: Simplify right side
    125,140.94x = 12,329,074,149.86
  5. Step 5: Solve for x
    x = 12,329,074,149.86/125,140.94
  6. Step 6: Final answer
    x = 98,521.51

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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.