Home / 102,260.20-153,186.06-81,235.72

Finding the Fourth Proportional to 102,260.20, 153,186.06 and 81,235.72

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Solution

The fourth proportional to 102,260.20, 153,186.06 and 81,235.72 is: 121,691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,260.20 : 153,186.06 = 81,235.72 : x
  2. Step 2: Convert to fraction form
    102,260.20/153,186.06 = 81,235.72/x
  3. Step 3: Cross multiply
    102,260.20x = 153,186.06 × 81,235.72
  4. Step 4: Simplify right side
    102,260.20x = 12,444,179,878.06
  5. Step 5: Solve for x
    x = 12,444,179,878.06/102,260.20
  6. Step 6: Final answer
    x = 121,691.33

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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.