Home / 207,482.10-311,229.55-81,117.30

Finding the Fourth Proportional to 207,482.10, 311,229.55 and 81,117.30

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Solution

The fourth proportional to 207,482.10, 311,229.55 and 81,117.30 is: 121,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,482.10 : 311,229.55 = 81,117.30 : x
  2. Step 2: Convert to fraction form
    207,482.10/311,229.55 = 81,117.30/x
  3. Step 3: Cross multiply
    207,482.10x = 311,229.55 × 81,117.30
  4. Step 4: Simplify right side
    207,482.10x = 25,246,100,776.22
  5. Step 5: Solve for x
    x = 25,246,100,776.22/207,482.10
  6. Step 6: Final answer
    x = 121,678.45

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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.