Home / 121,608.81-182,257.70-51,391.53

Finding the Fourth Proportional to 121,608.81, 182,257.70 and 51,391.53

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Solution

The fourth proportional to 121,608.81, 182,257.70 and 51,391.53 is: 77,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,608.81 : 182,257.70 = 51,391.53 : x
  2. Step 2: Convert to fraction form
    121,608.81/182,257.70 = 51,391.53/x
  3. Step 3: Cross multiply
    121,608.81x = 182,257.70 × 51,391.53
  4. Step 4: Simplify right side
    121,608.81x = 9,366,501,800.32
  5. Step 5: Solve for x
    x = 9,366,501,800.32/121,608.81
  6. Step 6: Final answer
    x = 77,021.57

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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.