Home / 131,426.80-197,140.20-91,337.20

Finding the Fourth Proportional to 131,426.80, 197,140.20 and 91,337.20

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Solution

The fourth proportional to 131,426.80, 197,140.20 and 91,337.20 is: 137,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,426.80 : 197,140.20 = 91,337.20 : x
  2. Step 2: Convert to fraction form
    131,426.80/197,140.20 = 91,337.20/x
  3. Step 3: Cross multiply
    131,426.80x = 197,140.20 × 91,337.20
  4. Step 4: Simplify right side
    131,426.80x = 18,006,233,875.44
  5. Step 5: Solve for x
    x = 18,006,233,875.44/131,426.80
  6. Step 6: Final answer
    x = 137,005.80

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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.