Home / 122,770.72-169,308.12-113,607.28

Finding the Fourth Proportional to 122,770.72, 169,308.12 and 113,607.28

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Solution

The fourth proportional to 122,770.72, 169,308.12 and 113,607.28 is: 156,671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,770.72 : 169,308.12 = 113,607.28 : x
  2. Step 2: Convert to fraction form
    122,770.72/169,308.12 = 113,607.28/x
  3. Step 3: Cross multiply
    122,770.72x = 169,308.12 × 113,607.28
  4. Step 4: Simplify right side
    122,770.72x = 19,234,634,995.11
  5. Step 5: Solve for x
    x = 19,234,634,995.11/122,770.72
  6. Step 6: Final answer
    x = 156,671.19

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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.