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Finding the Fourth Proportional to 158,722.97, 219,030.50 and 87,101.56

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Solution

The fourth proportional to 158,722.97, 219,030.50 and 87,101.56 is: 120,196.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,722.97 : 219,030.50 = 87,101.56 : x
  2. Step 2: Convert to fraction form
    158,722.97/219,030.50 = 87,101.56/x
  3. Step 3: Cross multiply
    158,722.97x = 219,030.50 × 87,101.56
  4. Step 4: Simplify right side
    158,722.97x = 19,077,896,706.92
  5. Step 5: Solve for x
    x = 19,077,896,706.92/158,722.97
  6. Step 6: Final answer
    x = 120,196.19

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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.