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Finding the Fourth Proportional to 101,747.90, 140,264.60 and 71,440.94

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Solution

The fourth proportional to 101,747.90, 140,264.60 and 71,440.94 is: 98,484.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,747.90 : 140,264.60 = 71,440.94 : x
  2. Step 2: Convert to fraction form
    101,747.90/140,264.60 = 71,440.94/x
  3. Step 3: Cross multiply
    101,747.90x = 140,264.60 × 71,440.94
  4. Step 4: Simplify right side
    101,747.90x = 10,020,634,872.72
  5. Step 5: Solve for x
    x = 10,020,634,872.72/101,747.90
  6. Step 6: Final answer
    x = 98,484.93

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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.