Home / 135,133.12-186,464.64-77,750.64

Finding the Fourth Proportional to 135,133.12, 186,464.64 and 77,750.64

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Solution

The fourth proportional to 135,133.12, 186,464.64 and 77,750.64 is: 107,284.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,133.12 : 186,464.64 = 77,750.64 : x
  2. Step 2: Convert to fraction form
    135,133.12/186,464.64 = 77,750.64/x
  3. Step 3: Cross multiply
    135,133.12x = 186,464.64 × 77,750.64
  4. Step 4: Simplify right side
    135,133.12x = 14,497,745,097.37
  5. Step 5: Solve for x
    x = 14,497,745,097.37/135,133.12
  6. Step 6: Final answer
    x = 107,284.91

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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.