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Finding the Fourth Proportional to 159,263.85, 219,784.14 and 87,643.87

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Solution

The fourth proportional to 159,263.85, 219,784.14 and 87,643.87 is: 120,948.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,263.85 : 219,784.14 = 87,643.87 : x
  2. Step 2: Convert to fraction form
    159,263.85/219,784.14 = 87,643.87/x
  3. Step 3: Cross multiply
    159,263.85x = 219,784.14 × 87,643.87
  4. Step 4: Simplify right side
    159,263.85x = 19,262,731,495.30
  5. Step 5: Solve for x
    x = 19,262,731,495.30/159,263.85
  6. Step 6: Final answer
    x = 120,948.55

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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.