Home / 142,112.64-213,190.02-47,311.86

Finding the Fourth Proportional to 142,112.64, 213,190.02 and 47,311.86

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Solution

The fourth proportional to 142,112.64, 213,190.02 and 47,311.86 is: 70,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,112.64 : 213,190.02 = 47,311.86 : x
  2. Step 2: Convert to fraction form
    142,112.64/213,190.02 = 47,311.86/x
  3. Step 3: Cross multiply
    142,112.64x = 213,190.02 × 47,311.86
  4. Step 4: Simplify right side
    142,112.64x = 10,086,416,379.64
  5. Step 5: Solve for x
    x = 10,086,416,379.64/142,112.64
  6. Step 6: Final answer
    x = 70,974.80

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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.