Home / 143,729.28-215,686.08-69,816.96

Finding the Fourth Proportional to 143,729.28, 215,686.08 and 69,816.96

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Solution

The fourth proportional to 143,729.28, 215,686.08 and 69,816.96 is: 104,770.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,729.28 : 215,686.08 = 69,816.96 : x
  2. Step 2: Convert to fraction form
    143,729.28/215,686.08 = 69,816.96/x
  3. Step 3: Cross multiply
    143,729.28x = 215,686.08 × 69,816.96
  4. Step 4: Simplify right side
    143,729.28x = 15,058,546,419.92
  5. Step 5: Solve for x
    x = 15,058,546,419.92/143,729.28
  6. Step 6: Final answer
    x = 104,770.21

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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.