Home / 261,565.56-392,076.18-121,208.76

Finding the Fourth Proportional to 261,565.56, 392,076.18 and 121,208.76

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Solution

The fourth proportional to 261,565.56, 392,076.18 and 121,208.76 is: 181,687.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,565.56 : 392,076.18 = 121,208.76 : x
  2. Step 2: Convert to fraction form
    261,565.56/392,076.18 = 121,208.76/x
  3. Step 3: Cross multiply
    261,565.56x = 392,076.18 × 121,208.76
  4. Step 4: Simplify right side
    261,565.56x = 47,523,067,603.34
  5. Step 5: Solve for x
    x = 47,523,067,603.34/261,565.56
  6. Step 6: Final answer
    x = 181,687.02

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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.