Home / 185,645.52-278,423.69-85,709.70

Finding the Fourth Proportional to 185,645.52, 278,423.69 and 85,709.70

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Solution

The fourth proportional to 185,645.52, 278,423.69 and 85,709.70 is: 128,543.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,645.52 : 278,423.69 = 85,709.70 : x
  2. Step 2: Convert to fraction form
    185,645.52/278,423.69 = 85,709.70/x
  3. Step 3: Cross multiply
    185,645.52x = 278,423.69 × 85,709.70
  4. Step 4: Simplify right side
    185,645.52x = 23,863,610,514.24
  5. Step 5: Solve for x
    x = 23,863,610,514.24/185,645.52
  6. Step 6: Final answer
    x = 128,543.96

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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.