Home / 117,785.12-162,538.80-67,474.40

Finding the Fourth Proportional to 117,785.12, 162,538.80 and 67,474.40

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Solution

The fourth proportional to 117,785.12, 162,538.80 and 67,474.40 is: 93,112.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,785.12 : 162,538.80 = 67,474.40 : x
  2. Step 2: Convert to fraction form
    117,785.12/162,538.80 = 67,474.40/x
  3. Step 3: Cross multiply
    117,785.12x = 162,538.80 × 67,474.40
  4. Step 4: Simplify right side
    117,785.12x = 10,967,208,006.72
  5. Step 5: Solve for x
    x = 10,967,208,006.72/117,785.12
  6. Step 6: Final answer
    x = 93,112.00

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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.