Home / 108,947.10-163,420.65-91,451.10

Finding the Fourth Proportional to 108,947.10, 163,420.65 and 91,451.10

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Solution

The fourth proportional to 108,947.10, 163,420.65 and 91,451.10 is: 137,176.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,947.10 : 163,420.65 = 91,451.10 : x
  2. Step 2: Convert to fraction form
    108,947.10/163,420.65 = 91,451.10/x
  3. Step 3: Cross multiply
    108,947.10x = 163,420.65 × 91,451.10
  4. Step 4: Simplify right side
    108,947.10x = 14,944,998,205.22
  5. Step 5: Solve for x
    x = 14,944,998,205.22/108,947.10
  6. Step 6: Final answer
    x = 137,176.65

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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.