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Finding the Fourth Proportional to 159,697.77, 220,383.14 and 87,100.91

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Solution

The fourth proportional to 159,697.77, 220,383.14 and 87,100.91 is: 120,199.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,697.77 : 220,383.14 = 87,100.91 : x
  2. Step 2: Convert to fraction form
    159,697.77/220,383.14 = 87,100.91/x
  3. Step 3: Cross multiply
    159,697.77x = 220,383.14 × 87,100.91
  4. Step 4: Simplify right side
    159,697.77x = 19,195,572,042.66
  5. Step 5: Solve for x
    x = 19,195,572,042.66/159,697.77
  6. Step 6: Final answer
    x = 120,199.37

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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.