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Finding the Fourth Proportional to 117,645.78, 176,490.54 and 38,765.55

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Solution

The fourth proportional to 117,645.78, 176,490.54 and 38,765.55 is: 58,155.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,645.78 : 176,490.54 = 38,765.55 : x
  2. Step 2: Convert to fraction form
    117,645.78/176,490.54 = 38,765.55/x
  3. Step 3: Cross multiply
    117,645.78x = 176,490.54 × 38,765.55
  4. Step 4: Simplify right side
    117,645.78x = 6,841,752,852.90
  5. Step 5: Solve for x
    x = 6,841,752,852.90/117,645.78
  6. Step 6: Final answer
    x = 58,155.53

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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.