Home / 102,712.12-154,112.10-49,378.48

Finding the Fourth Proportional to 102,712.12, 154,112.10 and 49,378.48

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Solution

The fourth proportional to 102,712.12, 154,112.10 and 49,378.48 is: 74,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,712.12 : 154,112.10 = 49,378.48 : x
  2. Step 2: Convert to fraction form
    102,712.12/154,112.10 = 49,378.48/x
  3. Step 3: Cross multiply
    102,712.12x = 154,112.10 × 49,378.48
  4. Step 4: Simplify right side
    102,712.12x = 7,609,821,247.61
  5. Step 5: Solve for x
    x = 7,609,821,247.61/102,712.12
  6. Step 6: Final answer
    x = 74,088.83

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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.