Home / 261,190.08-391,785.72-71,653.20

Finding the Fourth Proportional to 261,190.08, 391,785.72 and 71,653.20

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Solution

The fourth proportional to 261,190.08, 391,785.72 and 71,653.20 is: 107,479.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,190.08 : 391,785.72 = 71,653.20 : x
  2. Step 2: Convert to fraction form
    261,190.08/391,785.72 = 71,653.20/x
  3. Step 3: Cross multiply
    261,190.08x = 391,785.72 × 71,653.20
  4. Step 4: Simplify right side
    261,190.08x = 28,072,700,552.30
  5. Step 5: Solve for x
    x = 28,072,700,552.30/261,190.08
  6. Step 6: Final answer
    x = 107,479.96

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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.