Home / 123,885.20-185,876.40-45,007.40

Finding the Fourth Proportional to 123,885.20, 185,876.40 and 45,007.40

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Solution

The fourth proportional to 123,885.20, 185,876.40 and 45,007.40 is: 67,528.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,885.20 : 185,876.40 = 45,007.40 : x
  2. Step 2: Convert to fraction form
    123,885.20/185,876.40 = 45,007.40/x
  3. Step 3: Cross multiply
    123,885.20x = 185,876.40 × 45,007.40
  4. Step 4: Simplify right side
    123,885.20x = 8,365,813,485.36
  5. Step 5: Solve for x
    x = 8,365,813,485.36/123,885.20
  6. Step 6: Final answer
    x = 67,528.76

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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.