Home / 108,579.40-162,552.30-77,475.40

Finding the Fourth Proportional to 108,579.40, 162,552.30 and 77,475.40

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Solution

The fourth proportional to 108,579.40, 162,552.30 and 77,475.40 is: 115,987.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,579.40 : 162,552.30 = 77,475.40 : x
  2. Step 2: Convert to fraction form
    108,579.40/162,552.30 = 77,475.40/x
  3. Step 3: Cross multiply
    108,579.40x = 162,552.30 × 77,475.40
  4. Step 4: Simplify right side
    108,579.40x = 12,593,804,463.42
  5. Step 5: Solve for x
    x = 12,593,804,463.42/108,579.40
  6. Step 6: Final answer
    x = 115,987.05

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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.