Home / 98,121.10-147,183-28,000.40

Finding the Fourth Proportional to 98,121.10, 147,183 and 28,000.40

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Solution

The fourth proportional to 98,121.10, 147,183 and 28,000.40 is: 42,000.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,121.10 : 147,183 = 28,000.40 : x
  2. Step 2: Convert to fraction form
    98,121.10/147,183 = 28,000.40/x
  3. Step 3: Cross multiply
    98,121.10x = 147,183 × 28,000.40
  4. Step 4: Simplify right side
    98,121.10x = 4,121,182,873.20
  5. Step 5: Solve for x
    x = 4,121,182,873.20/98,121.10
  6. Step 6: Final answer
    x = 42,000.99

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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.