Home / 100,436.49-138,596.67-60,141.02

Finding the Fourth Proportional to 100,436.49, 138,596.67 and 60,141.02

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Solution

The fourth proportional to 100,436.49, 138,596.67 and 60,141.02 is: 82,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,436.49 : 138,596.67 = 60,141.02 : x
  2. Step 2: Convert to fraction form
    100,436.49/138,596.67 = 60,141.02/x
  3. Step 3: Cross multiply
    100,436.49x = 138,596.67 × 60,141.02
  4. Step 4: Simplify right side
    100,436.49x = 8,335,344,409.42
  5. Step 5: Solve for x
    x = 8,335,344,409.42/100,436.49
  6. Step 6: Final answer
    x = 82,991.20

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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.