Home / 103,427.20-155,140.80-67,997.80

Finding the Fourth Proportional to 103,427.20, 155,140.80 and 67,997.80

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Solution

The fourth proportional to 103,427.20, 155,140.80 and 67,997.80 is: 101,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,427.20 : 155,140.80 = 67,997.80 : x
  2. Step 2: Convert to fraction form
    103,427.20/155,140.80 = 67,997.80/x
  3. Step 3: Cross multiply
    103,427.20x = 155,140.80 × 67,997.80
  4. Step 4: Simplify right side
    103,427.20x = 10,549,233,090.24
  5. Step 5: Solve for x
    x = 10,549,233,090.24/103,427.20
  6. Step 6: Final answer
    x = 101,996.70

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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.