Home / 140,865.39-211,298.09-85,344.75

Finding the Fourth Proportional to 140,865.39, 211,298.09 and 85,344.75

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Solution

The fourth proportional to 140,865.39, 211,298.09 and 85,344.75 is: 128,017.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,865.39 : 211,298.09 = 85,344.75 : x
  2. Step 2: Convert to fraction form
    140,865.39/211,298.09 = 85,344.75/x
  3. Step 3: Cross multiply
    140,865.39x = 211,298.09 × 85,344.75
  4. Step 4: Simplify right side
    140,865.39x = 18,033,182,239.80
  5. Step 5: Solve for x
    x = 18,033,182,239.80/140,865.39
  6. Step 6: Final answer
    x = 128,017.13

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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.