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Finding the Fourth Proportional to 121,323.72, 182,115.18 and 68,835.72

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Solution

The fourth proportional to 121,323.72, 182,115.18 and 68,835.72 is: 103,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,323.72 : 182,115.18 = 68,835.72 : x
  2. Step 2: Convert to fraction form
    121,323.72/182,115.18 = 68,835.72/x
  3. Step 3: Cross multiply
    121,323.72x = 182,115.18 × 68,835.72
  4. Step 4: Simplify right side
    121,323.72x = 12,536,029,538.23
  5. Step 5: Solve for x
    x = 12,536,029,538.23/121,323.72
  6. Step 6: Final answer
    x = 103,327.11

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1.5x scale

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.