Home / 123,660.20-185,298.47-85,783.43

Finding the Fourth Proportional to 123,660.20, 185,298.47 and 85,783.43

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Solution

The fourth proportional to 123,660.20, 185,298.47 and 85,783.43 is: 128,542.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,660.20 : 185,298.47 = 85,783.43 : x
  2. Step 2: Convert to fraction form
    123,660.20/185,298.47 = 85,783.43/x
  3. Step 3: Cross multiply
    123,660.20x = 185,298.47 × 85,783.43
  4. Step 4: Simplify right side
    123,660.20x = 15,895,537,901.43
  5. Step 5: Solve for x
    x = 15,895,537,901.43/123,660.20
  6. Step 6: Final answer
    x = 128,542.07

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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.