Home / 120,131.61-165,772.89-66,417.27

Finding the Fourth Proportional to 120,131.61, 165,772.89 and 66,417.27

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Solution

The fourth proportional to 120,131.61, 165,772.89 and 66,417.27 is: 91,651.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.61 : 165,772.89 = 66,417.27 : x
  2. Step 2: Convert to fraction form
    120,131.61/165,772.89 = 66,417.27/x
  3. Step 3: Cross multiply
    120,131.61x = 165,772.89 × 66,417.27
  4. Step 4: Simplify right side
    120,131.61x = 11,010,182,793.81
  5. Step 5: Solve for x
    x = 11,010,182,793.81/120,131.61
  6. Step 6: Final answer
    x = 91,651.01

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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.