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Finding the Fourth Proportional to 159,303.87, 219,837.60 and 87,682.35

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Solution

The fourth proportional to 159,303.87, 219,837.60 and 87,682.35 is: 121,000.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,303.87 : 219,837.60 = 87,682.35 : x
  2. Step 2: Convert to fraction form
    159,303.87/219,837.60 = 87,682.35/x
  3. Step 3: Cross multiply
    159,303.87x = 219,837.60 × 87,682.35
  4. Step 4: Simplify right side
    159,303.87x = 19,275,877,386.36
  5. Step 5: Solve for x
    x = 19,275,877,386.36/159,303.87
  6. Step 6: Final answer
    x = 121,000.68

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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.