Home / 120,228.80-165,916.38-66,515.70

Finding the Fourth Proportional to 120,228.80, 165,916.38 and 66,515.70

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Solution

The fourth proportional to 120,228.80, 165,916.38 and 66,515.70 is: 91,792.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,228.80 : 165,916.38 = 66,515.70 : x
  2. Step 2: Convert to fraction form
    120,228.80/165,916.38 = 66,515.70/x
  3. Step 3: Cross multiply
    120,228.80x = 165,916.38 × 66,515.70
  4. Step 4: Simplify right side
    120,228.80x = 11,036,044,157.17
  5. Step 5: Solve for x
    x = 11,036,044,157.17/120,228.80
  6. Step 6: Final answer
    x = 91,792.02

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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.