Home / 178,247.86-245,968.05-102,781.78

Finding the Fourth Proportional to 178,247.86, 245,968.05 and 102,781.78

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Solution

The fourth proportional to 178,247.86, 245,968.05 and 102,781.78 is: 141,830.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,247.86 : 245,968.05 = 102,781.78 : x
  2. Step 2: Convert to fraction form
    178,247.86/245,968.05 = 102,781.78/x
  3. Step 3: Cross multiply
    178,247.86x = 245,968.05 × 102,781.78
  4. Step 4: Simplify right side
    178,247.86x = 25,281,034,002.13
  5. Step 5: Solve for x
    x = 25,281,034,002.13/178,247.86
  6. Step 6: Final answer
    x = 141,830.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.