Home / 123,561.20-185,341.80-81,497.90

Finding the Fourth Proportional to 123,561.20, 185,341.80 and 81,497.90

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Solution

The fourth proportional to 123,561.20, 185,341.80 and 81,497.90 is: 122,246.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,561.20 : 185,341.80 = 81,497.90 : x
  2. Step 2: Convert to fraction form
    123,561.20/185,341.80 = 81,497.90/x
  3. Step 3: Cross multiply
    123,561.20x = 185,341.80 × 81,497.90
  4. Step 4: Simplify right side
    123,561.20x = 15,104,967,482.22
  5. Step 5: Solve for x
    x = 15,104,967,482.22/123,561.20
  6. Step 6: Final answer
    x = 122,246.85

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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.