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Finding the Fourth Proportional to 159,321.96, 219,864.26 and 87,701.63

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Solution

The fourth proportional to 159,321.96, 219,864.26 and 87,701.63 is: 121,028.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,321.96 : 219,864.26 = 87,701.63 : x
  2. Step 2: Convert to fraction form
    159,321.96/219,864.26 = 87,701.63/x
  3. Step 3: Cross multiply
    159,321.96x = 219,864.26 × 87,701.63
  4. Step 4: Simplify right side
    159,321.96x = 19,282,453,980.74
  5. Step 5: Solve for x
    x = 19,282,453,980.74/159,321.96
  6. Step 6: Final answer
    x = 121,028.22

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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.