Home / 98,120.10-147,181.50-27,999.40

Finding the Fourth Proportional to 98,120.10, 147,181.50 and 27,999.40

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Solution

The fourth proportional to 98,120.10, 147,181.50 and 27,999.40 is: 41,999.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,120.10 : 147,181.50 = 27,999.40 : x
  2. Step 2: Convert to fraction form
    98,120.10/147,181.50 = 27,999.40/x
  3. Step 3: Cross multiply
    98,120.10x = 147,181.50 × 27,999.40
  4. Step 4: Simplify right side
    98,120.10x = 4,120,993,691.10
  5. Step 5: Solve for x
    x = 4,120,993,691.10/98,120.10
  6. Step 6: Final answer
    x = 41,999.49

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Double scale
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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.