Home / 138,244.25-190,762.29-77,813.87

Finding the Fourth Proportional to 138,244.25, 190,762.29 and 77,813.87

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Solution

The fourth proportional to 138,244.25, 190,762.29 and 77,813.87 is: 107,374.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,244.25 : 190,762.29 = 77,813.87 : x
  2. Step 2: Convert to fraction form
    138,244.25/190,762.29 = 77,813.87/x
  3. Step 3: Cross multiply
    138,244.25x = 190,762.29 × 77,813.87
  4. Step 4: Simplify right side
    138,244.25x = 14,843,951,081.15
  5. Step 5: Solve for x
    x = 14,843,951,081.15/138,244.25
  6. Step 6: Final answer
    x = 107,374.82

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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.