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Finding the Fourth Proportional to 159,015.43, 219,349.92 and 99,295.75

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Solution

The fourth proportional to 159,015.43, 219,349.92 and 99,295.75 is: 136,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,015.43 : 219,349.92 = 99,295.75 : x
  2. Step 2: Convert to fraction form
    159,015.43/219,349.92 = 99,295.75/x
  3. Step 3: Cross multiply
    159,015.43x = 219,349.92 × 99,295.75
  4. Step 4: Simplify right side
    159,015.43x = 21,780,514,818.84
  5. Step 5: Solve for x
    x = 21,780,514,818.84/159,015.43
  6. Step 6: Final answer
    x = 136,971.08

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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.