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Finding the Fourth Proportional to 159,453, 220,045.14 and 87,832.80

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Solution

The fourth proportional to 159,453, 220,045.14 and 87,832.80 is: 121,209.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,453 : 220,045.14 = 87,832.80 : x
  2. Step 2: Convert to fraction form
    159,453/220,045.14 = 87,832.80/x
  3. Step 3: Cross multiply
    159,453x = 220,045.14 × 87,832.80
  4. Step 4: Simplify right side
    159,453x = 19,327,180,772.59
  5. Step 5: Solve for x
    x = 19,327,180,772.59/159,453
  6. Step 6: Final answer
    x = 121,209.26

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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.