Home / 145,421.52-218,137.14-40,231.68

Finding the Fourth Proportional to 145,421.52, 218,137.14 and 40,231.68

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Solution

The fourth proportional to 145,421.52, 218,137.14 and 40,231.68 is: 60,348.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,421.52 : 218,137.14 = 40,231.68 : x
  2. Step 2: Convert to fraction form
    145,421.52/218,137.14 = 40,231.68/x
  3. Step 3: Cross multiply
    145,421.52x = 218,137.14 × 40,231.68
  4. Step 4: Simplify right side
    145,421.52x = 8,776,023,612.60
  5. Step 5: Solve for x
    x = 8,776,023,612.60/145,421.52
  6. Step 6: Final answer
    x = 60,348.86

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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.