Home / 108,369.26-162,621.56-77,977.49

Finding the Fourth Proportional to 108,369.26, 162,621.56 and 77,977.49

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Solution

The fourth proportional to 108,369.26, 162,621.56 and 77,977.49 is: 117,014.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,369.26 : 162,621.56 = 77,977.49 : x
  2. Step 2: Convert to fraction form
    108,369.26/162,621.56 = 77,977.49/x
  3. Step 3: Cross multiply
    108,369.26x = 162,621.56 × 77,977.49
  4. Step 4: Simplify right side
    108,369.26x = 12,680,820,011.90
  5. Step 5: Solve for x
    x = 12,680,820,011.90/108,369.26
  6. Step 6: Final answer
    x = 117,014.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.