Home / 145,760.19-218,756.91-75,659.55

Finding the Fourth Proportional to 145,760.19, 218,756.91 and 75,659.55

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Solution

The fourth proportional to 145,760.19, 218,756.91 and 75,659.55 is: 113,549.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,760.19 : 218,756.91 = 75,659.55 : x
  2. Step 2: Convert to fraction form
    145,760.19/218,756.91 = 75,659.55/x
  3. Step 3: Cross multiply
    145,760.19x = 218,756.91 × 75,659.55
  4. Step 4: Simplify right side
    145,760.19x = 16,551,049,369.99
  5. Step 5: Solve for x
    x = 16,551,049,369.99/145,760.19
  6. Step 6: Final answer
    x = 113,549.86

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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.