Home / 145,617.39-218,425.93-45,786.31

Finding the Fourth Proportional to 145,617.39, 218,425.93 and 45,786.31

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Solution

The fourth proportional to 145,617.39, 218,425.93 and 45,786.31 is: 68,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,617.39 : 218,425.93 = 45,786.31 : x
  2. Step 2: Convert to fraction form
    145,617.39/218,425.93 = 45,786.31/x
  3. Step 3: Cross multiply
    145,617.39x = 218,425.93 × 45,786.31
  4. Step 4: Simplify right side
    145,617.39x = 10,000,917,343.02
  5. Step 5: Solve for x
    x = 10,000,917,343.02/145,617.39
  6. Step 6: Final answer
    x = 68,679.42

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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.