Home / 109,639.85-164,287.51-84,740.85

Finding the Fourth Proportional to 109,639.85, 164,287.51 and 84,740.85

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Solution

The fourth proportional to 109,639.85, 164,287.51 and 84,740.85 is: 126,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,639.85 : 164,287.51 = 84,740.85 : x
  2. Step 2: Convert to fraction form
    109,639.85/164,287.51 = 84,740.85/x
  3. Step 3: Cross multiply
    109,639.85x = 164,287.51 × 84,740.85
  4. Step 4: Simplify right side
    109,639.85x = 13,921,863,029.93
  5. Step 5: Solve for x
    x = 13,921,863,029.93/109,639.85
  6. Step 6: Final answer
    x = 126,978.13

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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.