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Finding the Fourth Proportional to 135,081.51, 202,607.15 and 51,917.19

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Solution

The fourth proportional to 135,081.51, 202,607.15 and 51,917.19 is: 77,869.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,081.51 : 202,607.15 = 51,917.19 : x
  2. Step 2: Convert to fraction form
    135,081.51/202,607.15 = 51,917.19/x
  3. Step 3: Cross multiply
    135,081.51x = 202,607.15 × 51,917.19
  4. Step 4: Simplify right side
    135,081.51x = 10,518,793,642.32
  5. Step 5: Solve for x
    x = 10,518,793,642.32/135,081.51
  6. Step 6: Final answer
    x = 77,869.97

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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.