Home / 142,309.59-196,381.76-81,899.64

Finding the Fourth Proportional to 142,309.59, 196,381.76 and 81,899.64

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Solution

The fourth proportional to 142,309.59, 196,381.76 and 81,899.64 is: 113,018.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,309.59 : 196,381.76 = 81,899.64 : x
  2. Step 2: Convert to fraction form
    142,309.59/196,381.76 = 81,899.64/x
  3. Step 3: Cross multiply
    142,309.59x = 196,381.76 × 81,899.64
  4. Step 4: Simplify right side
    142,309.59x = 16,083,595,446.57
  5. Step 5: Solve for x
    x = 16,083,595,446.57/142,309.59
  6. Step 6: Final answer
    x = 113,018.35

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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.