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Finding the Fourth Proportional to 144,159.60, 198,940.68 and 80,499.72

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Solution

The fourth proportional to 144,159.60, 198,940.68 and 80,499.72 is: 111,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,159.60 : 198,940.68 = 80,499.72 : x
  2. Step 2: Convert to fraction form
    144,159.60/198,940.68 = 80,499.72/x
  3. Step 3: Cross multiply
    144,159.60x = 198,940.68 × 80,499.72
  4. Step 4: Simplify right side
    144,159.60x = 16,014,669,036.61
  5. Step 5: Solve for x
    x = 16,014,669,036.61/144,159.60
  6. Step 6: Final answer
    x = 111,089.85

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1.5x scale

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.