Home / 158,807.13-219,155.67-87,185.61

Finding the Fourth Proportional to 158,807.13, 219,155.67 and 87,185.61

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Solution

The fourth proportional to 158,807.13, 219,155.67 and 87,185.61 is: 120,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,807.13 : 219,155.67 = 87,185.61 : x
  2. Step 2: Convert to fraction form
    158,807.13/219,155.67 = 87,185.61/x
  3. Step 3: Cross multiply
    158,807.13x = 219,155.67 × 87,185.61
  4. Step 4: Simplify right side
    158,807.13x = 19,107,221,103.83
  5. Step 5: Solve for x
    x = 19,107,221,103.83/158,807.13
  6. Step 6: Final answer
    x = 120,317.15

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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.