Home / 143,009.55-197,353.20-79,347.20

Finding the Fourth Proportional to 143,009.55, 197,353.20 and 79,347.20

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Solution

The fourth proportional to 143,009.55, 197,353.20 and 79,347.20 is: 109,499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,009.55 : 197,353.20 = 79,347.20 : x
  2. Step 2: Convert to fraction form
    143,009.55/197,353.20 = 79,347.20/x
  3. Step 3: Cross multiply
    143,009.55x = 197,353.20 × 79,347.20
  4. Step 4: Simplify right side
    143,009.55x = 15,659,422,844.27
  5. Step 5: Solve for x
    x = 15,659,422,844.27/143,009.55
  6. Step 6: Final answer
    x = 109,499.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.