Home / 119,979.90-165,570.87-65,531.79

Finding the Fourth Proportional to 119,979.90, 165,570.87 and 65,531.79

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Solution

The fourth proportional to 119,979.90, 165,570.87 and 65,531.79 is: 90,433.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,979.90 : 165,570.87 = 65,531.79 : x
  2. Step 2: Convert to fraction form
    119,979.90/165,570.87 = 65,531.79/x
  3. Step 3: Cross multiply
    119,979.90x = 165,570.87 × 65,531.79
  4. Step 4: Simplify right side
    119,979.90x = 10,850,155,482.96
  5. Step 5: Solve for x
    x = 10,850,155,482.96/119,979.90
  6. Step 6: Final answer
    x = 90,433.11

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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.