Home / 145,742.68-218,424.66-65,721.88

Finding the Fourth Proportional to 145,742.68, 218,424.66 and 65,721.88

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Solution

The fourth proportional to 145,742.68, 218,424.66 and 65,721.88 is: 98,497.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,742.68 : 218,424.66 = 65,721.88 : x
  2. Step 2: Convert to fraction form
    145,742.68/218,424.66 = 65,721.88/x
  3. Step 3: Cross multiply
    145,742.68x = 218,424.66 × 65,721.88
  4. Step 4: Simplify right side
    145,742.68x = 14,355,279,293.56
  5. Step 5: Solve for x
    x = 14,355,279,293.56/145,742.68
  6. Step 6: Final answer
    x = 98,497.43

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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.