Home / 142,246.12-196,299.24-81,828.40

Finding the Fourth Proportional to 142,246.12, 196,299.24 and 81,828.40

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Solution

The fourth proportional to 142,246.12, 196,299.24 and 81,828.40 is: 112,922.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,246.12 : 196,299.24 = 81,828.40 : x
  2. Step 2: Convert to fraction form
    142,246.12/196,299.24 = 81,828.40/x
  3. Step 3: Cross multiply
    142,246.12x = 196,299.24 × 81,828.40
  4. Step 4: Simplify right side
    142,246.12x = 16,062,852,730.42
  5. Step 5: Solve for x
    x = 16,062,852,730.42/142,246.12
  6. Step 6: Final answer
    x = 112,922.96

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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.