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Finding the Fourth Proportional to 177,648.45, 245,168.84 and 101,170.78

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Solution

The fourth proportional to 177,648.45, 245,168.84 and 101,170.78 is: 139,623.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,648.45 : 245,168.84 = 101,170.78 : x
  2. Step 2: Convert to fraction form
    177,648.45/245,168.84 = 101,170.78/x
  3. Step 3: Cross multiply
    177,648.45x = 245,168.84 × 101,170.78
  4. Step 4: Simplify right side
    177,648.45x = 24,803,922,774.50
  5. Step 5: Solve for x
    x = 24,803,922,774.50/177,648.45
  6. Step 6: Final answer
    x = 139,623.64

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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.