Home / 228,156.80-342,258.66-86,121.72

Finding the Fourth Proportional to 228,156.80, 342,258.66 and 86,121.72

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Solution

The fourth proportional to 228,156.80, 342,258.66 and 86,121.72 is: 129,191.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,156.80 : 342,258.66 = 86,121.72 : x
  2. Step 2: Convert to fraction form
    228,156.80/342,258.66 = 86,121.72/x
  3. Step 3: Cross multiply
    228,156.80x = 342,258.66 × 86,121.72
  4. Step 4: Simplify right side
    228,156.80x = 29,475,904,484.10
  5. Step 5: Solve for x
    x = 29,475,904,484.10/228,156.80
  6. Step 6: Final answer
    x = 129,191.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.