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Finding the Fourth Proportional to 120,719.49, 181,256.99 and 67,515.71

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Solution

The fourth proportional to 120,719.49, 181,256.99 and 67,515.71 is: 101,372.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,719.49 : 181,256.99 = 67,515.71 : x
  2. Step 2: Convert to fraction form
    120,719.49/181,256.99 = 67,515.71/x
  3. Step 3: Cross multiply
    120,719.49x = 181,256.99 × 67,515.71
  4. Step 4: Simplify right side
    120,719.49x = 12,237,693,128.45
  5. Step 5: Solve for x
    x = 12,237,693,128.45/120,719.49
  6. Step 6: Final answer
    x = 101,372.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.