Home / 188,438.53-282,622.93-85,831.66

Finding the Fourth Proportional to 188,438.53, 282,622.93 and 85,831.66

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Solution

The fourth proportional to 188,438.53, 282,622.93 and 85,831.66 is: 128,731.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,438.53 : 282,622.93 = 85,831.66 : x
  2. Step 2: Convert to fraction form
    188,438.53/282,622.93 = 85,831.66/x
  3. Step 3: Cross multiply
    188,438.53x = 282,622.93 × 85,831.66
  4. Step 4: Simplify right side
    188,438.53x = 24,257,995,235.96
  5. Step 5: Solve for x
    x = 24,257,995,235.96/188,438.53
  6. Step 6: Final answer
    x = 128,731.61

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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.