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Finding the Fourth Proportional to 158,751.66, 219,077 and 90,769.91

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Solution

The fourth proportional to 158,751.66, 219,077 and 90,769.91 is: 125,262.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,751.66 : 219,077 = 90,769.91 : x
  2. Step 2: Convert to fraction form
    158,751.66/219,077 = 90,769.91/x
  3. Step 3: Cross multiply
    158,751.66x = 219,077 × 90,769.91
  4. Step 4: Simplify right side
    158,751.66x = 19,885,599,573.07
  5. Step 5: Solve for x
    x = 19,885,599,573.07/158,751.66
  6. Step 6: Final answer
    x = 125,262.31

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1.5x scale

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.