Home / 125,712.34-173,519.80-74,760.90

Finding the Fourth Proportional to 125,712.34, 173,519.80 and 74,760.90

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Solution

The fourth proportional to 125,712.34, 173,519.80 and 74,760.90 is: 103,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,712.34 : 173,519.80 = 74,760.90 : x
  2. Step 2: Convert to fraction form
    125,712.34/173,519.80 = 74,760.90/x
  3. Step 3: Cross multiply
    125,712.34x = 173,519.80 × 74,760.90
  4. Step 4: Simplify right side
    125,712.34x = 12,972,496,415.82
  5. Step 5: Solve for x
    x = 12,972,496,415.82/125,712.34
  6. Step 6: Final answer
    x = 103,191.91

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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.