Home / 99,921.41-137,889.91-54,598.42

Finding the Fourth Proportional to 99,921.41, 137,889.91 and 54,598.42

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Solution

The fourth proportional to 99,921.41, 137,889.91 and 54,598.42 is: 75,344.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,921.41 : 137,889.91 = 54,598.42 : x
  2. Step 2: Convert to fraction form
    99,921.41/137,889.91 = 54,598.42/x
  3. Step 3: Cross multiply
    99,921.41x = 137,889.91 × 54,598.42
  4. Step 4: Simplify right side
    99,921.41x = 7,528,571,460.55
  5. Step 5: Solve for x
    x = 7,528,571,460.55/99,921.41
  6. Step 6: Final answer
    x = 75,344.92

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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.