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Finding the Fourth Proportional to 149,900.80, 225,110.40 and 145,235.20

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Solution

The fourth proportional to 149,900.80, 225,110.40 and 145,235.20 is: 218,103.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,900.80 : 225,110.40 = 145,235.20 : x
  2. Step 2: Convert to fraction form
    149,900.80/225,110.40 = 145,235.20/x
  3. Step 3: Cross multiply
    149,900.80x = 225,110.40 × 145,235.20
  4. Step 4: Simplify right side
    149,900.80x = 32,693,953,966.08
  5. Step 5: Solve for x
    x = 32,693,953,966.08/149,900.80
  6. Step 6: Final answer
    x = 218,103.93

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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.