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Finding the Fourth Proportional to 144,359.60, 199,220.66 and 80,700.08

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Solution

The fourth proportional to 144,359.60, 199,220.66 and 80,700.08 is: 111,368.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,359.60 : 199,220.66 = 80,700.08 : x
  2. Step 2: Convert to fraction form
    144,359.60/199,220.66 = 80,700.08/x
  3. Step 3: Cross multiply
    144,359.60x = 199,220.66 × 80,700.08
  4. Step 4: Simplify right side
    144,359.60x = 16,077,123,199.65
  5. Step 5: Solve for x
    x = 16,077,123,199.65/144,359.60
  6. Step 6: Final answer
    x = 111,368.58

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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.