Home / 108,198.04-162,155.56-78,312.88

Finding the Fourth Proportional to 108,198.04, 162,155.56 and 78,312.88

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Solution

The fourth proportional to 108,198.04, 162,155.56 and 78,312.88 is: 117,366.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,198.04 : 162,155.56 = 78,312.88 : x
  2. Step 2: Convert to fraction form
    108,198.04/162,155.56 = 78,312.88/x
  3. Step 3: Cross multiply
    108,198.04x = 162,155.56 × 78,312.88
  4. Step 4: Simplify right side
    108,198.04x = 12,698,868,911.61
  5. Step 5: Solve for x
    x = 12,698,868,911.61/108,198.04
  6. Step 6: Final answer
    x = 117,366.90

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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.