Home / 142,310.09-196,382.45-81,900.14

Finding the Fourth Proportional to 142,310.09, 196,382.45 and 81,900.14

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Solution

The fourth proportional to 142,310.09, 196,382.45 and 81,900.14 is: 113,019.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,310.09 : 196,382.45 = 81,900.14 : x
  2. Step 2: Convert to fraction form
    142,310.09/196,382.45 = 81,900.14/x
  3. Step 3: Cross multiply
    142,310.09x = 196,382.45 × 81,900.14
  4. Step 4: Simplify right side
    142,310.09x = 16,083,750,148.54
  5. Step 5: Solve for x
    x = 16,083,750,148.54/142,310.09
  6. Step 6: Final answer
    x = 113,019.04

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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.