Home / 108,938.10-163,407.15-82,499.70

Finding the Fourth Proportional to 108,938.10, 163,407.15 and 82,499.70

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Solution

The fourth proportional to 108,938.10, 163,407.15 and 82,499.70 is: 123,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,938.10 : 163,407.15 = 82,499.70 : x
  2. Step 2: Convert to fraction form
    108,938.10/163,407.15 = 82,499.70/x
  3. Step 3: Cross multiply
    108,938.10x = 163,407.15 × 82,499.70
  4. Step 4: Simplify right side
    108,938.10x = 13,481,040,852.86
  5. Step 5: Solve for x
    x = 13,481,040,852.86/108,938.10
  6. Step 6: Final answer
    x = 123,749.55

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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.