Home / 123,731.86-170,750.40-67,143.23

Finding the Fourth Proportional to 123,731.86, 170,750.40 and 67,143.23

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Solution

The fourth proportional to 123,731.86, 170,750.40 and 67,143.23 is: 92,657.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,731.86 : 170,750.40 = 67,143.23 : x
  2. Step 2: Convert to fraction form
    123,731.86/170,750.40 = 67,143.23/x
  3. Step 3: Cross multiply
    123,731.86x = 170,750.40 × 67,143.23
  4. Step 4: Simplify right side
    123,731.86x = 11,464,733,379.79
  5. Step 5: Solve for x
    x = 11,464,733,379.79/123,731.86
  6. Step 6: Final answer
    x = 92,657.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.