Home / 120,125.61-165,758.94-66,403.35

Finding the Fourth Proportional to 120,125.61, 165,758.94 and 66,403.35

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Solution

The fourth proportional to 120,125.61, 165,758.94 and 66,403.35 is: 91,628.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,125.61 : 165,758.94 = 66,403.35 : x
  2. Step 2: Convert to fraction form
    120,125.61/165,758.94 = 66,403.35/x
  3. Step 3: Cross multiply
    120,125.61x = 165,758.94 × 66,403.35
  4. Step 4: Simplify right side
    120,125.61x = 11,006,948,908.45
  5. Step 5: Solve for x
    x = 11,006,948,908.45/120,125.61
  6. Step 6: Final answer
    x = 91,628.66

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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.