Home / 120,206.89-165,883.98-66,490.93

Finding the Fourth Proportional to 120,206.89, 165,883.98 and 66,490.93

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Solution

The fourth proportional to 120,206.89, 165,883.98 and 66,490.93 is: 91,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,206.89 : 165,883.98 = 66,490.93 : x
  2. Step 2: Convert to fraction form
    120,206.89/165,883.98 = 66,490.93/x
  3. Step 3: Cross multiply
    120,206.89x = 165,883.98 × 66,490.93
  4. Step 4: Simplify right side
    120,206.89x = 11,029,780,102.30
  5. Step 5: Solve for x
    x = 11,029,780,102.30/120,206.89
  6. Step 6: Final answer
    x = 91,756.64

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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.