Home / 125,518.30-188,218.05-72,943.90

Finding the Fourth Proportional to 125,518.30, 188,218.05 and 72,943.90

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Solution

The fourth proportional to 125,518.30, 188,218.05 and 72,943.90 is: 109,381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,518.30 : 188,218.05 = 72,943.90 : x
  2. Step 2: Convert to fraction form
    125,518.30/188,218.05 = 72,943.90/x
  3. Step 3: Cross multiply
    125,518.30x = 188,218.05 × 72,943.90
  4. Step 4: Simplify right side
    125,518.30x = 13,729,358,617.40
  5. Step 5: Solve for x
    x = 13,729,358,617.40/125,518.30
  6. Step 6: Final answer
    x = 109,381.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.