Home / 99,615.88-137,461.62-57,165.40

Finding the Fourth Proportional to 99,615.88, 137,461.62 and 57,165.40

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Solution

The fourth proportional to 99,615.88, 137,461.62 and 57,165.40 is: 78,883.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,615.88 : 137,461.62 = 57,165.40 : x
  2. Step 2: Convert to fraction form
    99,615.88/137,461.62 = 57,165.40/x
  3. Step 3: Cross multiply
    99,615.88x = 137,461.62 × 57,165.40
  4. Step 4: Simplify right side
    99,615.88x = 7,858,048,491.95
  5. Step 5: Solve for x
    x = 7,858,048,491.95/99,615.88
  6. Step 6: Final answer
    x = 78,883.49

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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.