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Finding the Fourth Proportional to 117,689.36, 162,407.36 and 67,378.64

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Solution

The fourth proportional to 117,689.36, 162,407.36 and 67,378.64 is: 92,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,689.36 : 162,407.36 = 67,378.64 : x
  2. Step 2: Convert to fraction form
    117,689.36/162,407.36 = 67,378.64/x
  3. Step 3: Cross multiply
    117,689.36x = 162,407.36 × 67,378.64
  4. Step 4: Simplify right side
    117,689.36x = 10,942,787,042.79
  5. Step 5: Solve for x
    x = 10,942,787,042.79/117,689.36
  6. Step 6: Final answer
    x = 92,980.26

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1.5x scale

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.