Home / 111,479.55-153,831.60-66,149.72

Finding the Fourth Proportional to 111,479.55, 153,831.60 and 66,149.72

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Solution

The fourth proportional to 111,479.55, 153,831.60 and 66,149.72 is: 91,280.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,479.55 : 153,831.60 = 66,149.72 : x
  2. Step 2: Convert to fraction form
    111,479.55/153,831.60 = 66,149.72/x
  3. Step 3: Cross multiply
    111,479.55x = 153,831.60 × 66,149.72
  4. Step 4: Simplify right side
    111,479.55x = 10,175,916,497.99
  5. Step 5: Solve for x
    x = 10,175,916,497.99/111,479.55
  6. Step 6: Final answer
    x = 91,280.57

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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.