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Finding the Fourth Proportional to 159,057.38, 219,494.81 and 87,437.46

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Solution

The fourth proportional to 159,057.38, 219,494.81 and 87,437.46 is: 120,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,057.38 : 219,494.81 = 87,437.46 : x
  2. Step 2: Convert to fraction form
    159,057.38/219,494.81 = 87,437.46/x
  3. Step 3: Cross multiply
    159,057.38x = 219,494.81 × 87,437.46
  4. Step 4: Simplify right side
    159,057.38x = 19,192,068,669.58
  5. Step 5: Solve for x
    x = 19,192,068,669.58/159,057.38
  6. Step 6: Final answer
    x = 120,661.29

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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.