Home / 120,110.69-165,645.34-99,660.35

Finding the Fourth Proportional to 120,110.69, 165,645.34 and 99,660.35

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Solution

The fourth proportional to 120,110.69, 165,645.34 and 99,660.35 is: 137,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,110.69 : 165,645.34 = 99,660.35 : x
  2. Step 2: Convert to fraction form
    120,110.69/165,645.34 = 99,660.35/x
  3. Step 3: Cross multiply
    120,110.69x = 165,645.34 × 99,660.35
  4. Step 4: Simplify right side
    120,110.69x = 16,508,272,560.27
  5. Step 5: Solve for x
    x = 16,508,272,560.27/120,110.69
  6. Step 6: Final answer
    x = 137,442.16

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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.