Home / 142,390.57-196,316.40-91,310.44

Finding the Fourth Proportional to 142,390.57, 196,316.40 and 91,310.44

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Solution

The fourth proportional to 142,390.57, 196,316.40 and 91,310.44 is: 125,891.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,390.57 : 196,316.40 = 91,310.44 : x
  2. Step 2: Convert to fraction form
    142,390.57/196,316.40 = 91,310.44/x
  3. Step 3: Cross multiply
    142,390.57x = 196,316.40 × 91,310.44
  4. Step 4: Simplify right side
    142,390.57x = 17,925,736,863.22
  5. Step 5: Solve for x
    x = 17,925,736,863.22/142,390.57
  6. Step 6: Final answer
    x = 125,891.32

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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.