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Finding the Fourth Proportional to 230,890.14, 346,387.14 and 81,140.76

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Solution

The fourth proportional to 230,890.14, 346,387.14 and 81,140.76 is: 121,729.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,890.14 : 346,387.14 = 81,140.76 : x
  2. Step 2: Convert to fraction form
    230,890.14/346,387.14 = 81,140.76/x
  3. Step 3: Cross multiply
    230,890.14x = 346,387.14 × 81,140.76
  4. Step 4: Simplify right side
    230,890.14x = 28,106,115,793.83
  5. Step 5: Solve for x
    x = 28,106,115,793.83/230,890.14
  6. Step 6: Final answer
    x = 121,729.39

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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.