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Finding the Fourth Proportional to 183,671.76, 253,471.44 and 103,105.20

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Solution

The fourth proportional to 183,671.76, 253,471.44 and 103,105.20 is: 142,287.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,671.76 : 253,471.44 = 103,105.20 : x
  2. Step 2: Convert to fraction form
    183,671.76/253,471.44 = 103,105.20/x
  3. Step 3: Cross multiply
    183,671.76x = 253,471.44 × 103,105.20
  4. Step 4: Simplify right side
    183,671.76x = 26,134,223,515.49
  5. Step 5: Solve for x
    x = 26,134,223,515.49/183,671.76
  6. Step 6: Final answer
    x = 142,287.65

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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.