Home / 141,844.80-212,767.20-128,020.80

Finding the Fourth Proportional to 141,844.80, 212,767.20 and 128,020.80

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Solution

The fourth proportional to 141,844.80, 212,767.20 and 128,020.80 is: 192,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,844.80 : 212,767.20 = 128,020.80 : x
  2. Step 2: Convert to fraction form
    141,844.80/212,767.20 = 128,020.80/x
  3. Step 3: Cross multiply
    141,844.80x = 212,767.20 × 128,020.80
  4. Step 4: Simplify right side
    141,844.80x = 27,238,627,157.76
  5. Step 5: Solve for x
    x = 27,238,627,157.76/141,844.80
  6. Step 6: Final answer
    x = 192,031.20

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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.