Home / 99,718.36-137,533.52-63,911.80

Finding the Fourth Proportional to 99,718.36, 137,533.52 and 63,911.80

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Solution

The fourth proportional to 99,718.36, 137,533.52 and 63,911.80 is: 88,148.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,718.36 : 137,533.52 = 63,911.80 : x
  2. Step 2: Convert to fraction form
    99,718.36/137,533.52 = 63,911.80/x
  3. Step 3: Cross multiply
    99,718.36x = 137,533.52 × 63,911.80
  4. Step 4: Simplify right side
    99,718.36x = 8,790,014,823.54
  5. Step 5: Solve for x
    x = 8,790,014,823.54/99,718.36
  6. Step 6: Final answer
    x = 88,148.41

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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.