Home / 89,738.40-134,607.60-68,743.20

Finding the Fourth Proportional to 89,738.40, 134,607.60 and 68,743.20

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Solution

The fourth proportional to 89,738.40, 134,607.60 and 68,743.20 is: 103,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,738.40 : 134,607.60 = 68,743.20 : x
  2. Step 2: Convert to fraction form
    89,738.40/134,607.60 = 68,743.20/x
  3. Step 3: Cross multiply
    89,738.40x = 134,607.60 × 68,743.20
  4. Step 4: Simplify right side
    89,738.40x = 9,253,357,168.32
  5. Step 5: Solve for x
    x = 9,253,357,168.32/89,738.40
  6. Step 6: Final answer
    x = 103,114.80

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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.