Home / 111,021.32-153,172.14-63,240.86

Finding the Fourth Proportional to 111,021.32, 153,172.14 and 63,240.86

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Solution

The fourth proportional to 111,021.32, 153,172.14 and 63,240.86 is: 87,251.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,021.32 : 153,172.14 = 63,240.86 : x
  2. Step 2: Convert to fraction form
    111,021.32/153,172.14 = 63,240.86/x
  3. Step 3: Cross multiply
    111,021.32x = 153,172.14 × 63,240.86
  4. Step 4: Simplify right side
    111,021.32x = 9,686,737,861.64
  5. Step 5: Solve for x
    x = 9,686,737,861.64/111,021.32
  6. Step 6: Final answer
    x = 87,251.15

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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.