Home / 89,531.20-134,134.80-70,933.60

Finding the Fourth Proportional to 89,531.20, 134,134.80 and 70,933.60

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Solution

The fourth proportional to 89,531.20, 134,134.80 and 70,933.60 is: 106,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,531.20 : 134,134.80 = 70,933.60 : x
  2. Step 2: Convert to fraction form
    89,531.20/134,134.80 = 70,933.60/x
  3. Step 3: Cross multiply
    89,531.20x = 134,134.80 × 70,933.60
  4. Step 4: Simplify right side
    89,531.20x = 9,514,664,249.28
  5. Step 5: Solve for x
    x = 9,514,664,249.28/89,531.20
  6. Step 6: Final answer
    x = 106,272.05

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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.