Home / 108,966.20-163,449.30-71,641.40

Finding the Fourth Proportional to 108,966.20, 163,449.30 and 71,641.40

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Solution

The fourth proportional to 108,966.20, 163,449.30 and 71,641.40 is: 107,462.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,966.20 : 163,449.30 = 71,641.40 : x
  2. Step 2: Convert to fraction form
    108,966.20/163,449.30 = 71,641.40/x
  3. Step 3: Cross multiply
    108,966.20x = 163,449.30 × 71,641.40
  4. Step 4: Simplify right side
    108,966.20x = 11,709,736,681.02
  5. Step 5: Solve for x
    x = 11,709,736,681.02/108,966.20
  6. Step 6: Final answer
    x = 107,462.10

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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.