Home / 141,638.19-195,493.95-81,207.75

Finding the Fourth Proportional to 141,638.19, 195,493.95 and 81,207.75

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Solution

The fourth proportional to 141,638.19, 195,493.95 and 81,207.75 is: 112,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,638.19 : 195,493.95 = 81,207.75 : x
  2. Step 2: Convert to fraction form
    141,638.19/195,493.95 = 81,207.75/x
  3. Step 3: Cross multiply
    141,638.19x = 195,493.95 × 81,207.75
  4. Step 4: Simplify right side
    141,638.19x = 15,875,623,818.11
  5. Step 5: Solve for x
    x = 15,875,623,818.11/141,638.19
  6. Step 6: Final answer
    x = 112,085.76

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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.