Home / 119,815.20-165,345.53-66,100.20

Finding the Fourth Proportional to 119,815.20, 165,345.53 and 66,100.20

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Solution

The fourth proportional to 119,815.20, 165,345.53 and 66,100.20 is: 91,218.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,815.20 : 165,345.53 = 66,100.20 : x
  2. Step 2: Convert to fraction form
    119,815.20/165,345.53 = 66,100.20/x
  3. Step 3: Cross multiply
    119,815.20x = 165,345.53 × 66,100.20
  4. Step 4: Simplify right side
    119,815.20x = 10,929,372,271.61
  5. Step 5: Solve for x
    x = 10,929,372,271.61/119,815.20
  6. Step 6: Final answer
    x = 91,218.58

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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.