Home / 99,737.20-137,636.66-56,716.68

Finding the Fourth Proportional to 99,737.20, 137,636.66 and 56,716.68

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Solution

The fourth proportional to 99,737.20, 137,636.66 and 56,716.68 is: 78,268.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,737.20 : 137,636.66 = 56,716.68 : x
  2. Step 2: Convert to fraction form
    99,737.20/137,636.66 = 56,716.68/x
  3. Step 3: Cross multiply
    99,737.20x = 137,636.66 × 56,716.68
  4. Step 4: Simplify right side
    99,737.20x = 7,806,294,401.49
  5. Step 5: Solve for x
    x = 7,806,294,401.49/99,737.20
  6. Step 6: Final answer
    x = 78,268.63

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1.5x scale

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.