Home / 138,203.24-190,718.25-77,773.86

Finding the Fourth Proportional to 138,203.24, 190,718.25 and 77,773.86

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Solution

The fourth proportional to 138,203.24, 190,718.25 and 77,773.86 is: 107,326.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,203.24 : 190,718.25 = 77,773.86 : x
  2. Step 2: Convert to fraction form
    138,203.24/190,718.25 = 77,773.86/x
  3. Step 3: Cross multiply
    138,203.24x = 190,718.25 × 77,773.86
  4. Step 4: Simplify right side
    138,203.24x = 14,832,894,474.95
  5. Step 5: Solve for x
    x = 14,832,894,474.95/138,203.24
  6. Step 6: Final answer
    x = 107,326.68

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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.