Home / 109,440.38-151,018.66-61,705.46

Finding the Fourth Proportional to 109,440.38, 151,018.66 and 61,705.46

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Solution

The fourth proportional to 109,440.38, 151,018.66 and 61,705.46 is: 85,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,440.38 : 151,018.66 = 61,705.46 : x
  2. Step 2: Convert to fraction form
    109,440.38/151,018.66 = 61,705.46/x
  3. Step 3: Cross multiply
    109,440.38x = 151,018.66 × 61,705.46
  4. Step 4: Simplify right side
    109,440.38x = 9,318,675,883.88
  5. Step 5: Solve for x
    x = 9,318,675,883.88/109,440.38
  6. Step 6: Final answer
    x = 85,148.42

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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.