Home / 158,679.27-218,970.14-87,057.81

Finding the Fourth Proportional to 158,679.27, 218,970.14 and 87,057.81

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Solution

The fourth proportional to 158,679.27, 218,970.14 and 87,057.81 is: 120,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,679.27 : 218,970.14 = 87,057.81 : x
  2. Step 2: Convert to fraction form
    158,679.27/218,970.14 = 87,057.81/x
  3. Step 3: Cross multiply
    158,679.27x = 218,970.14 × 87,057.81
  4. Step 4: Simplify right side
    158,679.27x = 19,063,060,408.50
  5. Step 5: Solve for x
    x = 19,063,060,408.50/158,679.27
  6. Step 6: Final answer
    x = 120,135.80

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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.