Home / 99,364.32-137,129.76-56,933.28

Finding the Fourth Proportional to 99,364.32, 137,129.76 and 56,933.28

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Solution

The fourth proportional to 99,364.32, 137,129.76 and 56,933.28 is: 78,571.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,364.32 : 137,129.76 = 56,933.28 : x
  2. Step 2: Convert to fraction form
    99,364.32/137,129.76 = 56,933.28/x
  3. Step 3: Cross multiply
    99,364.32x = 137,129.76 × 56,933.28
  4. Step 4: Simplify right side
    99,364.32x = 7,807,247,022.41
  5. Step 5: Solve for x
    x = 7,807,247,022.41/99,364.32
  6. Step 6: Final answer
    x = 78,571.94

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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.