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Finding the Fourth Proportional to 101,672, 140,273.76 and 61,370.46

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Solution

The fourth proportional to 101,672, 140,273.76 and 61,370.46 is: 84,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,672 : 140,273.76 = 61,370.46 : x
  2. Step 2: Convert to fraction form
    101,672/140,273.76 = 61,370.46/x
  3. Step 3: Cross multiply
    101,672x = 140,273.76 × 61,370.46
  4. Step 4: Simplify right side
    101,672x = 8,608,665,177.13
  5. Step 5: Solve for x
    x = 8,608,665,177.13/101,672
  6. Step 6: Final answer
    x = 84,670.95

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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.