Home / 137,421.40-206,132.10-131,006.20

Finding the Fourth Proportional to 137,421.40, 206,132.10 and 131,006.20

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Solution

The fourth proportional to 137,421.40, 206,132.10 and 131,006.20 is: 196,509.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,421.40 : 206,132.10 = 131,006.20 : x
  2. Step 2: Convert to fraction form
    137,421.40/206,132.10 = 131,006.20/x
  3. Step 3: Cross multiply
    137,421.40x = 206,132.10 × 131,006.20
  4. Step 4: Simplify right side
    137,421.40x = 27,004,583,119.02
  5. Step 5: Solve for x
    x = 27,004,583,119.02/137,421.40
  6. Step 6: Final answer
    x = 196,509.30

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1.5x scale

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.