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Finding the Fourth Proportional to 144,054.80, 215,898.60 and 80,874.80

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Solution

The fourth proportional to 144,054.80, 215,898.60 and 80,874.80 is: 121,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,054.80 : 215,898.60 = 80,874.80 : x
  2. Step 2: Convert to fraction form
    144,054.80/215,898.60 = 80,874.80/x
  3. Step 3: Cross multiply
    144,054.80x = 215,898.60 × 80,874.80
  4. Step 4: Simplify right side
    144,054.80x = 17,460,756,095.28
  5. Step 5: Solve for x
    x = 17,460,756,095.28/144,054.80
  6. Step 6: Final answer
    x = 121,209.12

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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.