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Finding the Fourth Proportional to 117,987.76, 176,983.44 and 43,123.12

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Solution

The fourth proportional to 117,987.76, 176,983.44 and 43,123.12 is: 64,685.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,987.76 : 176,983.44 = 43,123.12 : x
  2. Step 2: Convert to fraction form
    117,987.76/176,983.44 = 43,123.12/x
  3. Step 3: Cross multiply
    117,987.76x = 176,983.44 × 43,123.12
  4. Step 4: Simplify right side
    117,987.76x = 7,632,078,121.13
  5. Step 5: Solve for x
    x = 7,632,078,121.13/117,987.76
  6. Step 6: Final answer
    x = 64,685.34

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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.