Home / 120,150.84-165,805.20-66,434.46

Finding the Fourth Proportional to 120,150.84, 165,805.20 and 66,434.46

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Solution

The fourth proportional to 120,150.84, 165,805.20 and 66,434.46 is: 91,677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,150.84 : 165,805.20 = 66,434.46 : x
  2. Step 2: Convert to fraction form
    120,150.84/165,805.20 = 66,434.46/x
  3. Step 3: Cross multiply
    120,150.84x = 165,805.20 × 66,434.46
  4. Step 4: Simplify right side
    120,150.84x = 11,015,178,927.19
  5. Step 5: Solve for x
    x = 11,015,178,927.19/120,150.84
  6. Step 6: Final answer
    x = 91,677.92

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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.