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Finding the Fourth Proportional to 159,228.77, 219,740.94 and 91,258.76

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Solution

The fourth proportional to 159,228.77, 219,740.94 and 91,258.76 is: 125,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,228.77 : 219,740.94 = 91,258.76 : x
  2. Step 2: Convert to fraction form
    159,228.77/219,740.94 = 91,258.76/x
  3. Step 3: Cross multiply
    159,228.77x = 219,740.94 × 91,258.76
  4. Step 4: Simplify right side
    159,228.77x = 20,053,286,254.99
  5. Step 5: Solve for x
    x = 20,053,286,254.99/159,228.77
  6. Step 6: Final answer
    x = 125,940.10

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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.