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Finding the Fourth Proportional to 131,437.80, 197,156.70 and 75,256.20

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Solution

The fourth proportional to 131,437.80, 197,156.70 and 75,256.20 is: 112,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,437.80 : 197,156.70 = 75,256.20 : x
  2. Step 2: Convert to fraction form
    131,437.80/197,156.70 = 75,256.20/x
  3. Step 3: Cross multiply
    131,437.80x = 197,156.70 × 75,256.20
  4. Step 4: Simplify right side
    131,437.80x = 14,837,264,046.54
  5. Step 5: Solve for x
    x = 14,837,264,046.54/131,437.80
  6. Step 6: Final answer
    x = 112,884.30

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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.