Home / 113,146.73-156,125.14-65,390.86

Finding the Fourth Proportional to 113,146.73, 156,125.14 and 65,390.86

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Solution

The fourth proportional to 113,146.73, 156,125.14 and 65,390.86 is: 90,229.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,146.73 : 156,125.14 = 65,390.86 : x
  2. Step 2: Convert to fraction form
    113,146.73/156,125.14 = 65,390.86/x
  3. Step 3: Cross multiply
    113,146.73x = 156,125.14 × 65,390.86
  4. Step 4: Simplify right side
    113,146.73x = 10,209,157,172.22
  5. Step 5: Solve for x
    x = 10,209,157,172.22/113,146.73
  6. Step 6: Final answer
    x = 90,229.36

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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.