Home / 142,088.92-196,089.24-81,679.12

Finding the Fourth Proportional to 142,088.92, 196,089.24 and 81,679.12

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Solution

The fourth proportional to 142,088.92, 196,089.24 and 81,679.12 is: 112,720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,088.92 : 196,089.24 = 81,679.12 : x
  2. Step 2: Convert to fraction form
    142,088.92/196,089.24 = 81,679.12/x
  3. Step 3: Cross multiply
    142,088.92x = 196,089.24 × 81,679.12
  4. Step 4: Simplify right side
    142,088.92x = 16,016,396,564.67
  5. Step 5: Solve for x
    x = 16,016,396,564.67/142,088.92
  6. Step 6: Final answer
    x = 112,720.94

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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.