Home / 134,439.31-185,505.69-77,839.75

Finding the Fourth Proportional to 134,439.31, 185,505.69 and 77,839.75

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Solution

The fourth proportional to 134,439.31, 185,505.69 and 77,839.75 is: 107,406.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,439.31 : 185,505.69 = 77,839.75 : x
  2. Step 2: Convert to fraction form
    134,439.31/185,505.69 = 77,839.75/x
  3. Step 3: Cross multiply
    134,439.31x = 185,505.69 × 77,839.75
  4. Step 4: Simplify right side
    134,439.31x = 14,439,716,533.18
  5. Step 5: Solve for x
    x = 14,439,716,533.18/134,439.31
  6. Step 6: Final answer
    x = 107,406.95

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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.