Home / 135,241.98-186,571.05-87,510.74

Finding the Fourth Proportional to 135,241.98, 186,571.05 and 87,510.74

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Solution

The fourth proportional to 135,241.98, 186,571.05 and 87,510.74 is: 120,724.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,241.98 : 186,571.05 = 87,510.74 : x
  2. Step 2: Convert to fraction form
    135,241.98/186,571.05 = 87,510.74/x
  3. Step 3: Cross multiply
    135,241.98x = 186,571.05 × 87,510.74
  4. Step 4: Simplify right side
    135,241.98x = 16,326,970,648.08
  5. Step 5: Solve for x
    x = 16,326,970,648.08/135,241.98
  6. Step 6: Final answer
    x = 120,724.13

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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.