Home / 99,747.50-137,701.73-63,485.43

Finding the Fourth Proportional to 99,747.50, 137,701.73 and 63,485.43

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Solution

The fourth proportional to 99,747.50, 137,701.73 and 63,485.43 is: 87,641.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,747.50 : 137,701.73 = 63,485.43 : x
  2. Step 2: Convert to fraction form
    99,747.50/137,701.73 = 63,485.43/x
  3. Step 3: Cross multiply
    99,747.50x = 137,701.73 × 63,485.43
  4. Step 4: Simplify right side
    99,747.50x = 8,742,053,223.37
  5. Step 5: Solve for x
    x = 8,742,053,223.37/99,747.50
  6. Step 6: Final answer
    x = 87,641.83

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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.