Home / 145,939.19-218,909.39-40,759.07

Finding the Fourth Proportional to 145,939.19, 218,909.39 and 40,759.07

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Solution

The fourth proportional to 145,939.19, 218,909.39 and 40,759.07 is: 61,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,939.19 : 218,909.39 = 40,759.07 : x
  2. Step 2: Convert to fraction form
    145,939.19/218,909.39 = 40,759.07/x
  3. Step 3: Cross multiply
    145,939.19x = 218,909.39 × 40,759.07
  4. Step 4: Simplify right side
    145,939.19x = 8,922,541,852.33
  5. Step 5: Solve for x
    x = 8,922,541,852.33/145,939.19
  6. Step 6: Final answer
    x = 61,138.77

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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.