Home / 158,700.11-218,998.62-87,078.69

Finding the Fourth Proportional to 158,700.11, 218,998.62 and 87,078.69

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Solution

The fourth proportional to 158,700.11, 218,998.62 and 87,078.69 is: 120,164.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,700.11 : 218,998.62 = 87,078.69 : x
  2. Step 2: Convert to fraction form
    158,700.11/218,998.62 = 87,078.69/x
  3. Step 3: Cross multiply
    158,700.11x = 218,998.62 × 87,078.69
  4. Step 4: Simplify right side
    158,700.11x = 19,070,112,941.41
  5. Step 5: Solve for x
    x = 19,070,112,941.41/158,700.11
  6. Step 6: Final answer
    x = 120,164.46

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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.