Home / 99,931.19-137,906.84-54,611.08

Finding the Fourth Proportional to 99,931.19, 137,906.84 and 54,611.08

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Solution

The fourth proportional to 99,931.19, 137,906.84 and 54,611.08 is: 75,364.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,931.19 : 137,906.84 = 54,611.08 : x
  2. Step 2: Convert to fraction form
    99,931.19/137,906.84 = 54,611.08/x
  3. Step 3: Cross multiply
    99,931.19x = 137,906.84 × 54,611.08
  4. Step 4: Simplify right side
    99,931.19x = 7,531,241,263.55
  5. Step 5: Solve for x
    x = 7,531,241,263.55/99,931.19
  6. Step 6: Final answer
    x = 75,364.27

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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.