Home / 99,738.99-137,648.03-56,731.95

Finding the Fourth Proportional to 99,738.99, 137,648.03 and 56,731.95

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Solution

The fourth proportional to 99,738.99, 137,648.03 and 56,731.95 is: 78,294.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,738.99 : 137,648.03 = 56,731.95 : x
  2. Step 2: Convert to fraction form
    99,738.99/137,648.03 = 56,731.95/x
  3. Step 3: Cross multiply
    99,738.99x = 137,648.03 × 56,731.95
  4. Step 4: Simplify right side
    99,738.99x = 7,809,040,871.90
  5. Step 5: Solve for x
    x = 7,809,040,871.90/99,738.99
  6. Step 6: Final answer
    x = 78,294.77

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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.