Home / 124,149.65-171,362.66-81,135.41

Finding the Fourth Proportional to 124,149.65, 171,362.66 and 81,135.41

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Solution

The fourth proportional to 124,149.65, 171,362.66 and 81,135.41 is: 111,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,149.65 : 171,362.66 = 81,135.41 : x
  2. Step 2: Convert to fraction form
    124,149.65/171,362.66 = 81,135.41/x
  3. Step 3: Cross multiply
    124,149.65x = 171,362.66 × 81,135.41
  4. Step 4: Simplify right side
    124,149.65x = 13,903,578,415.30
  5. Step 5: Solve for x
    x = 13,903,578,415.30/124,149.65
  6. Step 6: Final answer
    x = 111,990.48

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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.