Home / 119,850.84-165,387.16-66,135.72

Finding the Fourth Proportional to 119,850.84, 165,387.16 and 66,135.72

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Solution

The fourth proportional to 119,850.84, 165,387.16 and 66,135.72 is: 91,263.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,850.84 : 165,387.16 = 66,135.72 : x
  2. Step 2: Convert to fraction form
    119,850.84/165,387.16 = 66,135.72/x
  3. Step 3: Cross multiply
    119,850.84x = 165,387.16 × 66,135.72
  4. Step 4: Simplify right side
    119,850.84x = 10,937,998,905.36
  5. Step 5: Solve for x
    x = 10,937,998,905.36/119,850.84
  6. Step 6: Final answer
    x = 91,263.43

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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.