Home / 99,570.70-137,408.78-57,133.18

Finding the Fourth Proportional to 99,570.70, 137,408.78 and 57,133.18

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Solution

The fourth proportional to 99,570.70, 137,408.78 and 57,133.18 is: 78,844.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,570.70 : 137,408.78 = 57,133.18 : x
  2. Step 2: Convert to fraction form
    99,570.70/137,408.78 = 57,133.18/x
  3. Step 3: Cross multiply
    99,570.70x = 137,408.78 × 57,133.18
  4. Step 4: Simplify right side
    99,570.70x = 7,850,599,588.61
  5. Step 5: Solve for x
    x = 7,850,599,588.61/99,570.70
  6. Step 6: Final answer
    x = 78,844.48

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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.