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Finding the Fourth Proportional to 158,798.58, 219,143.97 and 90,814.50

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Solution

The fourth proportional to 158,798.58, 219,143.97 and 90,814.50 is: 125,325.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,798.58 : 219,143.97 = 90,814.50 : x
  2. Step 2: Convert to fraction form
    158,798.58/219,143.97 = 90,814.50/x
  3. Step 3: Cross multiply
    158,798.58x = 219,143.97 × 90,814.50
  4. Step 4: Simplify right side
    158,798.58x = 19,901,450,063.57
  5. Step 5: Solve for x
    x = 19,901,450,063.57/158,798.58
  6. Step 6: Final answer
    x = 125,325.11

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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.