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Finding the Fourth Proportional to 109,578.70, 151,223.16 and 61,832.08

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Solution

The fourth proportional to 109,578.70, 151,223.16 and 61,832.08 is: 85,330.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,578.70 : 151,223.16 = 61,832.08 : x
  2. Step 2: Convert to fraction form
    109,578.70/151,223.16 = 61,832.08/x
  3. Step 3: Cross multiply
    109,578.70x = 151,223.16 × 61,832.08
  4. Step 4: Simplify right side
    109,578.70x = 9,350,442,526.97
  5. Step 5: Solve for x
    x = 9,350,442,526.97/109,578.70
  6. Step 6: Final answer
    x = 85,330.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.