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Finding the Fourth Proportional to 144,031.65, 198,763.71 and 80,369.39

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Solution

The fourth proportional to 144,031.65, 198,763.71 and 80,369.39 is: 110,909.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,031.65 : 198,763.71 = 80,369.39 : x
  2. Step 2: Convert to fraction form
    144,031.65/198,763.71 = 80,369.39/x
  3. Step 3: Cross multiply
    144,031.65x = 198,763.71 × 80,369.39
  4. Step 4: Simplify right side
    144,031.65x = 15,974,518,322.36
  5. Step 5: Solve for x
    x = 15,974,518,322.36/144,031.65
  6. Step 6: Final answer
    x = 110,909.78

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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.