Home / 99,938.27-137,928.87-63,628.11

Finding the Fourth Proportional to 99,938.27, 137,928.87 and 63,628.11

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Solution

The fourth proportional to 99,938.27, 137,928.87 and 63,628.11 is: 87,815.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,938.27 : 137,928.87 = 63,628.11 : x
  2. Step 2: Convert to fraction form
    99,938.27/137,928.87 = 63,628.11/x
  3. Step 3: Cross multiply
    99,938.27x = 137,928.87 × 63,628.11
  4. Step 4: Simplify right side
    99,938.27x = 8,776,153,312.54
  5. Step 5: Solve for x
    x = 8,776,153,312.54/99,938.27
  6. Step 6: Final answer
    x = 87,815.74

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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.