Home / 107,532.80-161,126.40-89,907.20

Finding the Fourth Proportional to 107,532.80, 161,126.40 and 89,907.20

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Solution

The fourth proportional to 107,532.80, 161,126.40 and 89,907.20 is: 134,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,532.80 : 161,126.40 = 89,907.20 : x
  2. Step 2: Convert to fraction form
    107,532.80/161,126.40 = 89,907.20/x
  3. Step 3: Cross multiply
    107,532.80x = 161,126.40 × 89,907.20
  4. Step 4: Simplify right side
    107,532.80x = 14,486,423,470.08
  5. Step 5: Solve for x
    x = 14,486,423,470.08/107,532.80
  6. Step 6: Final answer
    x = 134,716.32

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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.