Home / 120,189.23-165,854.40-65,730.56

Finding the Fourth Proportional to 120,189.23, 165,854.40 and 65,730.56

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Solution

The fourth proportional to 120,189.23, 165,854.40 and 65,730.56 is: 90,704.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,189.23 : 165,854.40 = 65,730.56 : x
  2. Step 2: Convert to fraction form
    120,189.23/165,854.40 = 65,730.56/x
  3. Step 3: Cross multiply
    120,189.23x = 165,854.40 × 65,730.56
  4. Step 4: Simplify right side
    120,189.23x = 10,901,702,590.46
  5. Step 5: Solve for x
    x = 10,901,702,590.46/120,189.23
  6. Step 6: Final answer
    x = 90,704.49

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1.5x scale

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.