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Finding the Fourth Proportional to 158,762.53, 219,091.52 and 87,143.77

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Solution

The fourth proportional to 158,762.53, 219,091.52 and 87,143.77 is: 120,257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,762.53 : 219,091.52 = 87,143.77 : x
  2. Step 2: Convert to fraction form
    158,762.53/219,091.52 = 87,143.77/x
  3. Step 3: Cross multiply
    158,762.53x = 219,091.52 × 87,143.77
  4. Step 4: Simplify right side
    158,762.53x = 19,092,459,496.65
  5. Step 5: Solve for x
    x = 19,092,459,496.65/158,762.53
  6. Step 6: Final answer
    x = 120,257.97

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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.