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Finding the Fourth Proportional to 159,173.21, 219,655.45 and 87,551.66

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Solution

The fourth proportional to 159,173.21, 219,655.45 and 87,551.66 is: 120,819.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,173.21 : 219,655.45 = 87,551.66 : x
  2. Step 2: Convert to fraction form
    159,173.21/219,655.45 = 87,551.66/x
  3. Step 3: Cross multiply
    159,173.21x = 219,655.45 × 87,551.66
  4. Step 4: Simplify right side
    159,173.21x = 19,231,199,275.55
  5. Step 5: Solve for x
    x = 19,231,199,275.55/159,173.21
  6. Step 6: Final answer
    x = 120,819.32

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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.