Home / 121,130.78-181,725.30-38,024.78

Finding the Fourth Proportional to 121,130.78, 181,725.30 and 38,024.78

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Solution

The fourth proportional to 121,130.78, 181,725.30 and 38,024.78 is: 57,046.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,130.78 : 181,725.30 = 38,024.78 : x
  2. Step 2: Convert to fraction form
    121,130.78/181,725.30 = 38,024.78/x
  3. Step 3: Cross multiply
    121,130.78x = 181,725.30 × 38,024.78
  4. Step 4: Simplify right side
    121,130.78x = 6,910,064,552.93
  5. Step 5: Solve for x
    x = 6,910,064,552.93/121,130.78
  6. Step 6: Final answer
    x = 57,046.31

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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.