Home / 121,785.86-182,792.70-61,857.20

Finding the Fourth Proportional to 121,785.86, 182,792.70 and 61,857.20

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Solution

The fourth proportional to 121,785.86, 182,792.70 and 61,857.20 is: 92,843.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,785.86 : 182,792.70 = 61,857.20 : x
  2. Step 2: Convert to fraction form
    121,785.86/182,792.70 = 61,857.20/x
  3. Step 3: Cross multiply
    121,785.86x = 182,792.70 × 61,857.20
  4. Step 4: Simplify right side
    121,785.86x = 11,307,045,059.42
  5. Step 5: Solve for x
    x = 11,307,045,059.42/121,785.86
  6. Step 6: Final answer
    x = 92,843.66

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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.