Home / 108,521.10-162,781.65-91,025.10

Finding the Fourth Proportional to 108,521.10, 162,781.65 and 91,025.10

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Solution

The fourth proportional to 108,521.10, 162,781.65 and 91,025.10 is: 136,537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,521.10 : 162,781.65 = 91,025.10 : x
  2. Step 2: Convert to fraction form
    108,521.10/162,781.65 = 91,025.10/x
  3. Step 3: Cross multiply
    108,521.10x = 162,781.65 × 91,025.10
  4. Step 4: Simplify right side
    108,521.10x = 14,817,215,969.42
  5. Step 5: Solve for x
    x = 14,817,215,969.42/108,521.10
  6. Step 6: Final answer
    x = 136,537.65

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1.5x scale

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.