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Finding the Fourth Proportional to 77,958.52, 116,140.28 and 74,196.88

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Solution

The fourth proportional to 77,958.52, 116,140.28 and 74,196.88 is: 110,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,958.52 : 116,140.28 = 74,196.88 : x
  2. Step 2: Convert to fraction form
    77,958.52/116,140.28 = 74,196.88/x
  3. Step 3: Cross multiply
    77,958.52x = 116,140.28 × 74,196.88
  4. Step 4: Simplify right side
    77,958.52x = 8,617,246,418.33
  5. Step 5: Solve for x
    x = 8,617,246,418.33/77,958.52
  6. Step 6: Final answer
    x = 110,536.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.