Home / 261,102.42-391,590.05-109,217.40

Finding the Fourth Proportional to 261,102.42, 391,590.05 and 109,217.40

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Solution

The fourth proportional to 261,102.42, 391,590.05 and 109,217.40 is: 163,799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,102.42 : 391,590.05 = 109,217.40 : x
  2. Step 2: Convert to fraction form
    261,102.42/391,590.05 = 109,217.40/x
  3. Step 3: Cross multiply
    261,102.42x = 391,590.05 × 109,217.40
  4. Step 4: Simplify right side
    261,102.42x = 42,768,445,112.32
  5. Step 5: Solve for x
    x = 42,768,445,112.32/261,102.42
  6. Step 6: Final answer
    x = 163,799.50

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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.