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Finding the Fourth Proportional to 144,357.60, 199,217.90 and 80,698.08

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Solution

The fourth proportional to 144,357.60, 199,217.90 and 80,698.08 is: 111,365.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,357.60 : 199,217.90 = 80,698.08 : x
  2. Step 2: Convert to fraction form
    144,357.60/199,217.90 = 80,698.08/x
  3. Step 3: Cross multiply
    144,357.60x = 199,217.90 × 80,698.08
  4. Step 4: Simplify right side
    144,357.60x = 16,076,502,031.63
  5. Step 5: Solve for x
    x = 16,076,502,031.63/144,357.60
  6. Step 6: Final answer
    x = 111,365.82

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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.