Home / 138,465.06-191,081.97-74,802.87

Finding the Fourth Proportional to 138,465.06, 191,081.97 and 74,802.87

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Solution

The fourth proportional to 138,465.06, 191,081.97 and 74,802.87 is: 103,228.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,465.06 : 191,081.97 = 74,802.87 : x
  2. Step 2: Convert to fraction form
    138,465.06/191,081.97 = 74,802.87/x
  3. Step 3: Cross multiply
    138,465.06x = 191,081.97 × 74,802.87
  4. Step 4: Simplify right side
    138,465.06x = 14,293,479,761.25
  5. Step 5: Solve for x
    x = 14,293,479,761.25/138,465.06
  6. Step 6: Final answer
    x = 103,228.06

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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.