Home / 99,370.22-137,135.70-56,928.85

Finding the Fourth Proportional to 99,370.22, 137,135.70 and 56,928.85

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Solution

The fourth proportional to 99,370.22, 137,135.70 and 56,928.85 is: 78,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,370.22 : 137,135.70 = 56,928.85 : x
  2. Step 2: Convert to fraction form
    99,370.22/137,135.70 = 56,928.85/x
  3. Step 3: Cross multiply
    99,370.22x = 137,135.70 × 56,928.85
  4. Step 4: Simplify right side
    99,370.22x = 7,806,977,352.11
  5. Step 5: Solve for x
    x = 7,806,977,352.11/99,370.22
  6. Step 6: Final answer
    x = 78,564.56

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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.