Home / 99,964.81-137,951.43-54,642.98

Finding the Fourth Proportional to 99,964.81, 137,951.43 and 54,642.98

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Solution

The fourth proportional to 99,964.81, 137,951.43 and 54,642.98 is: 75,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,964.81 : 137,951.43 = 54,642.98 : x
  2. Step 2: Convert to fraction form
    99,964.81/137,951.43 = 54,642.98/x
  3. Step 3: Cross multiply
    99,964.81x = 137,951.43 × 54,642.98
  4. Step 4: Simplify right side
    99,964.81x = 7,538,076,335.79
  5. Step 5: Solve for x
    x = 7,538,076,335.79/99,964.81
  6. Step 6: Final answer
    x = 75,407.30

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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.