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Finding the Fourth Proportional to 159,043.79, 219,477.89 and 87,422.27

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Solution

The fourth proportional to 159,043.79, 219,477.89 and 87,422.27 is: 120,641.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,043.79 : 219,477.89 = 87,422.27 : x
  2. Step 2: Convert to fraction form
    159,043.79/219,477.89 = 87,422.27/x
  3. Step 3: Cross multiply
    159,043.79x = 219,477.89 × 87,422.27
  4. Step 4: Simplify right side
    159,043.79x = 19,187,254,479.78
  5. Step 5: Solve for x
    x = 19,187,254,479.78/159,043.79
  6. Step 6: Final answer
    x = 120,641.33

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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.