Home / 205,875.60-309,331.80-131,031.60

Finding the Fourth Proportional to 205,875.60, 309,331.80 and 131,031.60

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Solution

The fourth proportional to 205,875.60, 309,331.80 and 131,031.60 is: 196,877.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,875.60 : 309,331.80 = 131,031.60 : x
  2. Step 2: Convert to fraction form
    205,875.60/309,331.80 = 131,031.60/x
  3. Step 3: Cross multiply
    205,875.60x = 309,331.80 × 131,031.60
  4. Step 4: Simplify right side
    205,875.60x = 40,532,240,684.88
  5. Step 5: Solve for x
    x = 40,532,240,684.88/205,875.60
  6. Step 6: Final answer
    x = 196,877.34

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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.