Home / 127,985.10-192,123.45-75,424.20

Finding the Fourth Proportional to 127,985.10, 192,123.45 and 75,424.20

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Solution

The fourth proportional to 127,985.10, 192,123.45 and 75,424.20 is: 113,222.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,985.10 : 192,123.45 = 75,424.20 : x
  2. Step 2: Convert to fraction form
    127,985.10/192,123.45 = 75,424.20/x
  3. Step 3: Cross multiply
    127,985.10x = 192,123.45 × 75,424.20
  4. Step 4: Simplify right side
    127,985.10x = 14,490,757,517.49
  5. Step 5: Solve for x
    x = 14,490,757,517.49/127,985.10
  6. Step 6: Final answer
    x = 113,222.22

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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.