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Finding the Fourth Proportional to 144,319.66, 199,161.42 and 80,657.45

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Solution

The fourth proportional to 144,319.66, 199,161.42 and 80,657.45 is: 111,307.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,319.66 : 199,161.42 = 80,657.45 : x
  2. Step 2: Convert to fraction form
    144,319.66/199,161.42 = 80,657.45/x
  3. Step 3: Cross multiply
    144,319.66x = 199,161.42 × 80,657.45
  4. Step 4: Simplify right side
    144,319.66x = 16,063,851,872.29
  5. Step 5: Solve for x
    x = 16,063,851,872.29/144,319.66
  6. Step 6: Final answer
    x = 111,307.44

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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.