Home / 138,081.96-190,551.29-77,652.59

Finding the Fourth Proportional to 138,081.96, 190,551.29 and 77,652.59

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Solution

The fourth proportional to 138,081.96, 190,551.29 and 77,652.59 is: 107,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,081.96 : 190,551.29 = 77,652.59 : x
  2. Step 2: Convert to fraction form
    138,081.96/190,551.29 = 77,652.59/x
  3. Step 3: Cross multiply
    138,081.96x = 190,551.29 × 77,652.59
  4. Step 4: Simplify right side
    138,081.96x = 14,796,800,243.58
  5. Step 5: Solve for x
    x = 14,796,800,243.58/138,081.96
  6. Step 6: Final answer
    x = 107,159.55

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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.