Home / 130,190.19-179,655.24-72,818.43

Finding the Fourth Proportional to 130,190.19, 179,655.24 and 72,818.43

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Solution

The fourth proportional to 130,190.19, 179,655.24 and 72,818.43 is: 100,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,190.19 : 179,655.24 = 72,818.43 : x
  2. Step 2: Convert to fraction form
    130,190.19/179,655.24 = 72,818.43/x
  3. Step 3: Cross multiply
    130,190.19x = 179,655.24 × 72,818.43
  4. Step 4: Simplify right side
    130,190.19x = 13,082,213,191.78
  5. Step 5: Solve for x
    x = 13,082,213,191.78/130,190.19
  6. Step 6: Final answer
    x = 100,485.40

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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.