Home / 117,400.32-162,012.42-66,411.90

Finding the Fourth Proportional to 117,400.32, 162,012.42 and 66,411.90

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Solution

The fourth proportional to 117,400.32, 162,012.42 and 66,411.90 is: 91,648.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,400.32 : 162,012.42 = 66,411.90 : x
  2. Step 2: Convert to fraction form
    117,400.32/162,012.42 = 66,411.90/x
  3. Step 3: Cross multiply
    117,400.32x = 162,012.42 × 66,411.90
  4. Step 4: Simplify right side
    117,400.32x = 10,759,552,635.80
  5. Step 5: Solve for x
    x = 10,759,552,635.80/117,400.32
  6. Step 6: Final answer
    x = 91,648.41

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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.