Home / 99,738.14-137,643.90-57,299.40

Finding the Fourth Proportional to 99,738.14, 137,643.90 and 57,299.40

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Solution

The fourth proportional to 99,738.14, 137,643.90 and 57,299.40 is: 79,076.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,738.14 : 137,643.90 = 57,299.40 : x
  2. Step 2: Convert to fraction form
    99,738.14/137,643.90 = 57,299.40/x
  3. Step 3: Cross multiply
    99,738.14x = 137,643.90 × 57,299.40
  4. Step 4: Simplify right side
    99,738.14x = 7,886,912,883.66
  5. Step 5: Solve for x
    x = 7,886,912,883.66/99,738.14
  6. Step 6: Final answer
    x = 79,076.20

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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.