Home / 163,520.20-245,312.70-137,405.80

Finding the Fourth Proportional to 163,520.20, 245,312.70 and 137,405.80

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Solution

The fourth proportional to 163,520.20, 245,312.70 and 137,405.80 is: 206,135.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,520.20 : 245,312.70 = 137,405.80 : x
  2. Step 2: Convert to fraction form
    163,520.20/245,312.70 = 137,405.80/x
  3. Step 3: Cross multiply
    163,520.20x = 245,312.70 × 137,405.80
  4. Step 4: Simplify right side
    163,520.20x = 33,707,387,793.66
  5. Step 5: Solve for x
    x = 33,707,387,793.66/163,520.20
  6. Step 6: Final answer
    x = 206,135.93

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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.