Home / 117,686.64-162,474.60-77,517.12

Finding the Fourth Proportional to 117,686.64, 162,474.60 and 77,517.12

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Solution

The fourth proportional to 117,686.64, 162,474.60 and 77,517.12 is: 107,017.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,686.64 : 162,474.60 = 77,517.12 : x
  2. Step 2: Convert to fraction form
    117,686.64/162,474.60 = 77,517.12/x
  3. Step 3: Cross multiply
    117,686.64x = 162,474.60 × 77,517.12
  4. Step 4: Simplify right side
    117,686.64x = 12,594,563,065.15
  5. Step 5: Solve for x
    x = 12,594,563,065.15/117,686.64
  6. Step 6: Final answer
    x = 107,017.78

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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.