Home / 125,549.20-188,323.80-72,405.10

Finding the Fourth Proportional to 125,549.20, 188,323.80 and 72,405.10

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Solution

The fourth proportional to 125,549.20, 188,323.80 and 72,405.10 is: 108,607.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,549.20 : 188,323.80 = 72,405.10 : x
  2. Step 2: Convert to fraction form
    125,549.20/188,323.80 = 72,405.10/x
  3. Step 3: Cross multiply
    125,549.20x = 188,323.80 × 72,405.10
  4. Step 4: Simplify right side
    125,549.20x = 13,635,603,571.38
  5. Step 5: Solve for x
    x = 13,635,603,571.38/125,549.20
  6. Step 6: Final answer
    x = 108,607.65

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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.