Home / 131,421.90-197,132.85-72,227.10

Finding the Fourth Proportional to 131,421.90, 197,132.85 and 72,227.10

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Solution

The fourth proportional to 131,421.90, 197,132.85 and 72,227.10 is: 108,340.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,421.90 : 197,132.85 = 72,227.10 : x
  2. Step 2: Convert to fraction form
    131,421.90/197,132.85 = 72,227.10/x
  3. Step 3: Cross multiply
    131,421.90x = 197,132.85 × 72,227.10
  4. Step 4: Simplify right side
    131,421.90x = 14,238,334,070.24
  5. Step 5: Solve for x
    x = 14,238,334,070.24/131,421.90
  6. Step 6: Final answer
    x = 108,340.65

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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.