Home / 108,386.10-162,579.15-90,890.10

Finding the Fourth Proportional to 108,386.10, 162,579.15 and 90,890.10

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Solution

The fourth proportional to 108,386.10, 162,579.15 and 90,890.10 is: 136,335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,386.10 : 162,579.15 = 90,890.10 : x
  2. Step 2: Convert to fraction form
    108,386.10/162,579.15 = 90,890.10/x
  3. Step 3: Cross multiply
    108,386.10x = 162,579.15 × 90,890.10
  4. Step 4: Simplify right side
    108,386.10x = 14,776,835,201.42
  5. Step 5: Solve for x
    x = 14,776,835,201.42/108,386.10
  6. Step 6: Final answer
    x = 136,335.15

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Double scale
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Similar ratio
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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.