Home / 122,513.12-168,543.20-117,264.32

Finding the Fourth Proportional to 122,513.12, 168,543.20 and 117,264.32

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Solution

The fourth proportional to 122,513.12, 168,543.20 and 117,264.32 is: 161,322.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,513.12 : 168,543.20 = 117,264.32 : x
  2. Step 2: Convert to fraction form
    122,513.12/168,543.20 = 117,264.32/x
  3. Step 3: Cross multiply
    122,513.12x = 168,543.20 × 117,264.32
  4. Step 4: Simplify right side
    122,513.12x = 19,764,103,738.62
  5. Step 5: Solve for x
    x = 19,764,103,738.62/122,513.12
  6. Step 6: Final answer
    x = 161,322.34

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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.