Home / 123,784.12-185,701.20-39,541.78

Finding the Fourth Proportional to 123,784.12, 185,701.20 and 39,541.78

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Solution

The fourth proportional to 123,784.12, 185,701.20 and 39,541.78 is: 59,320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,784.12 : 185,701.20 = 39,541.78 : x
  2. Step 2: Convert to fraction form
    123,784.12/185,701.20 = 39,541.78/x
  3. Step 3: Cross multiply
    123,784.12x = 185,701.20 × 39,541.78
  4. Step 4: Simplify right side
    123,784.12x = 7,342,955,996.14
  5. Step 5: Solve for x
    x = 7,342,955,996.14/123,784.12
  6. Step 6: Final answer
    x = 59,320.66

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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.