Home / 206,355.45-284,829.57-121,521.72

Finding the Fourth Proportional to 206,355.45, 284,829.57 and 121,521.72

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Solution

The fourth proportional to 206,355.45, 284,829.57 and 121,521.72 is: 167,734.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,355.45 : 284,829.57 = 121,521.72 : x
  2. Step 2: Convert to fraction form
    206,355.45/284,829.57 = 121,521.72/x
  3. Step 3: Cross multiply
    206,355.45x = 284,829.57 × 121,521.72
  4. Step 4: Simplify right side
    206,355.45x = 34,612,979,253.26
  5. Step 5: Solve for x
    x = 34,612,979,253.26/206,355.45
  6. Step 6: Final answer
    x = 167,734.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.