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Finding the Fourth Proportional to 159,610.39, 220,256.66 and 87,011.77

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Solution

The fourth proportional to 159,610.39, 220,256.66 and 87,011.77 is: 120,073.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,610.39 : 220,256.66 = 87,011.77 : x
  2. Step 2: Convert to fraction form
    159,610.39/220,256.66 = 87,011.77/x
  3. Step 3: Cross multiply
    159,610.39x = 220,256.66 × 87,011.77
  4. Step 4: Simplify right side
    159,610.39x = 19,164,922,993.14
  5. Step 5: Solve for x
    x = 19,164,922,993.14/159,610.39
  6. Step 6: Final answer
    x = 120,073.16

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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.