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Finding the Fourth Proportional to 158,620.70, 218,895.06 and 87,001.00

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Solution

The fourth proportional to 158,620.70, 218,895.06 and 87,001.00 is: 120,060.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,620.70 : 218,895.06 = 87,001.00 : x
  2. Step 2: Convert to fraction form
    158,620.70/218,895.06 = 87,001.00/x
  3. Step 3: Cross multiply
    158,620.70x = 218,895.06 × 87,001.00
  4. Step 4: Simplify right side
    158,620.70x = 19,044,089,635.98
  5. Step 5: Solve for x
    x = 19,044,089,635.98/158,620.70
  6. Step 6: Final answer
    x = 120,060.56

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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.