Home / 279,160.10-418,610.55-121,307.30

Finding the Fourth Proportional to 279,160.10, 418,610.55 and 121,307.30

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Solution

The fourth proportional to 279,160.10, 418,610.55 and 121,307.30 is: 181,904.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,160.10 : 418,610.55 = 121,307.30 : x
  2. Step 2: Convert to fraction form
    279,160.10/418,610.55 = 121,307.30/x
  3. Step 3: Cross multiply
    279,160.10x = 418,610.55 × 121,307.30
  4. Step 4: Simplify right side
    279,160.10x = 50,780,515,572.02
  5. Step 5: Solve for x
    x = 50,780,515,572.02/279,160.10
  6. Step 6: Final answer
    x = 181,904.63

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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.