Home / 142,312.96-196,399.48-81,892.80

Finding the Fourth Proportional to 142,312.96, 196,399.48 and 81,892.80

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Solution

The fourth proportional to 142,312.96, 196,399.48 and 81,892.80 is: 113,016.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,312.96 : 196,399.48 = 81,892.80 : x
  2. Step 2: Convert to fraction form
    142,312.96/196,399.48 = 81,892.80/x
  3. Step 3: Cross multiply
    142,312.96x = 196,399.48 × 81,892.80
  4. Step 4: Simplify right side
    142,312.96x = 16,083,703,335.74
  5. Step 5: Solve for x
    x = 16,083,703,335.74/142,312.96
  6. Step 6: Final answer
    x = 113,016.43

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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.