Home / 105,427.20-158,140.80-69,997.80

Finding the Fourth Proportional to 105,427.20, 158,140.80 and 69,997.80

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Solution

The fourth proportional to 105,427.20, 158,140.80 and 69,997.80 is: 104,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,427.20 : 158,140.80 = 69,997.80 : x
  2. Step 2: Convert to fraction form
    105,427.20/158,140.80 = 69,997.80/x
  3. Step 3: Cross multiply
    105,427.20x = 158,140.80 × 69,997.80
  4. Step 4: Simplify right side
    105,427.20x = 11,069,508,090.24
  5. Step 5: Solve for x
    x = 11,069,508,090.24/105,427.20
  6. Step 6: Final answer
    x = 104,996.70

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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.