Home / 121,961.61-182,942.62-80,106.08

Finding the Fourth Proportional to 121,961.61, 182,942.62 and 80,106.08

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Solution

The fourth proportional to 121,961.61, 182,942.62 and 80,106.08 is: 120,159.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,961.61 : 182,942.62 = 80,106.08 : x
  2. Step 2: Convert to fraction form
    121,961.61/182,942.62 = 80,106.08/x
  3. Step 3: Cross multiply
    121,961.61x = 182,942.62 × 80,106.08
  4. Step 4: Simplify right side
    121,961.61x = 14,654,815,038.15
  5. Step 5: Solve for x
    x = 14,654,815,038.15/121,961.61
  6. Step 6: Final answer
    x = 120,159.25

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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.