Home / 123,981.80-185,972.70-30,487.55

Finding the Fourth Proportional to 123,981.80, 185,972.70 and 30,487.55

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Solution

The fourth proportional to 123,981.80, 185,972.70 and 30,487.55 is: 45,731.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,981.80 : 185,972.70 = 30,487.55 : x
  2. Step 2: Convert to fraction form
    123,981.80/185,972.70 = 30,487.55/x
  3. Step 3: Cross multiply
    123,981.80x = 185,972.70 × 30,487.55
  4. Step 4: Simplify right side
    123,981.80x = 5,669,851,989.89
  5. Step 5: Solve for x
    x = 5,669,851,989.89/123,981.80
  6. Step 6: Final answer
    x = 45,731.33

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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.