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Finding the Fourth Proportional to 148,412.58, 204,811.11 and 87,154.71

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Solution

The fourth proportional to 148,412.58, 204,811.11 and 87,154.71 is: 120,274.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,412.58 : 204,811.11 = 87,154.71 : x
  2. Step 2: Convert to fraction form
    148,412.58/204,811.11 = 87,154.71/x
  3. Step 3: Cross multiply
    148,412.58x = 204,811.11 × 87,154.71
  4. Step 4: Simplify right side
    148,412.58x = 17,850,252,896.83
  5. Step 5: Solve for x
    x = 17,850,252,896.83/148,412.58
  6. Step 6: Final answer
    x = 120,274.53

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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.