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Finding the Fourth Proportional to 117,820.87, 176,758.64 and 38,930.31

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Solution

The fourth proportional to 117,820.87, 176,758.64 and 38,930.31 is: 58,404.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,820.87 : 176,758.64 = 38,930.31 : x
  2. Step 2: Convert to fraction form
    117,820.87/176,758.64 = 38,930.31/x
  3. Step 3: Cross multiply
    117,820.87x = 176,758.64 × 38,930.31
  4. Step 4: Simplify right side
    117,820.87x = 6,881,268,650.38
  5. Step 5: Solve for x
    x = 6,881,268,650.38/117,820.87
  6. Step 6: Final answer
    x = 58,404.50

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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.