Home / 119,935.28-165,506.40-66,219.20

Finding the Fourth Proportional to 119,935.28, 165,506.40 and 66,219.20

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Solution

The fourth proportional to 119,935.28, 165,506.40 and 66,219.20 is: 91,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,935.28 : 165,506.40 = 66,219.20 : x
  2. Step 2: Convert to fraction form
    119,935.28/165,506.40 = 66,219.20/x
  3. Step 3: Cross multiply
    119,935.28x = 165,506.40 × 66,219.20
  4. Step 4: Simplify right side
    119,935.28x = 10,959,701,402.88
  5. Step 5: Solve for x
    x = 10,959,701,402.88/119,935.28
  6. Step 6: Final answer
    x = 91,380.13

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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.