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Finding the Fourth Proportional to 121,059.66, 181,360.53 and 68,506.86

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Solution

The fourth proportional to 121,059.66, 181,360.53 and 68,506.86 is: 102,630.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,059.66 : 181,360.53 = 68,506.86 : x
  2. Step 2: Convert to fraction form
    121,059.66/181,360.53 = 68,506.86/x
  3. Step 3: Cross multiply
    121,059.66x = 181,360.53 × 68,506.86
  4. Step 4: Simplify right side
    121,059.66x = 12,424,440,438.24
  5. Step 5: Solve for x
    x = 12,424,440,438.24/121,059.66
  6. Step 6: Final answer
    x = 102,630.72

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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.