Home / 142,028.31-196,070.13-88,330.68

Finding the Fourth Proportional to 142,028.31, 196,070.13 and 88,330.68

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Solution

The fourth proportional to 142,028.31, 196,070.13 and 88,330.68 is: 121,940.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,028.31 : 196,070.13 = 88,330.68 : x
  2. Step 2: Convert to fraction form
    142,028.31/196,070.13 = 88,330.68/x
  3. Step 3: Cross multiply
    142,028.31x = 196,070.13 × 88,330.68
  4. Step 4: Simplify right side
    142,028.31x = 17,319,007,910.59
  5. Step 5: Solve for x
    x = 17,319,007,910.59/142,028.31
  6. Step 6: Final answer
    x = 121,940.53

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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.