Home / 113,568.18-156,724.08-65,849.21

Finding the Fourth Proportional to 113,568.18, 156,724.08 and 65,849.21

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Solution

The fourth proportional to 113,568.18, 156,724.08 and 65,849.21 is: 90,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,568.18 : 156,724.08 = 65,849.21 : x
  2. Step 2: Convert to fraction form
    113,568.18/156,724.08 = 65,849.21/x
  3. Step 3: Cross multiply
    113,568.18x = 156,724.08 × 65,849.21
  4. Step 4: Simplify right side
    113,568.18x = 10,320,156,072.36
  5. Step 5: Solve for x
    x = 10,320,156,072.36/113,568.18
  6. Step 6: Final answer
    x = 90,871.90

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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.