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Finding the Fourth Proportional to 101,676.92, 140,192.14 and 87,505.40

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Solution

The fourth proportional to 101,676.92, 140,192.14 and 87,505.40 is: 120,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,676.92 : 140,192.14 = 87,505.40 : x
  2. Step 2: Convert to fraction form
    101,676.92/140,192.14 = 87,505.40/x
  3. Step 3: Cross multiply
    101,676.92x = 140,192.14 × 87,505.40
  4. Step 4: Simplify right side
    101,676.92x = 12,267,569,287.56
  5. Step 5: Solve for x
    x = 12,267,569,287.56/101,676.92
  6. Step 6: Final answer
    x = 120,652.45

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1.5x scale

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.