Home / 99,947.36-137,943.24-57,497.60

Finding the Fourth Proportional to 99,947.36, 137,943.24 and 57,497.60

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Solution

The fourth proportional to 99,947.36, 137,943.24 and 57,497.60 is: 79,355.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,947.36 : 137,943.24 = 57,497.60 : x
  2. Step 2: Convert to fraction form
    99,947.36/137,943.24 = 57,497.60/x
  3. Step 3: Cross multiply
    99,947.36x = 137,943.24 × 57,497.60
  4. Step 4: Simplify right side
    99,947.36x = 7,931,405,236.22
  5. Step 5: Solve for x
    x = 7,931,405,236.22/99,947.36
  6. Step 6: Final answer
    x = 79,355.83

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1.5x scale

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.