Home / 142,156.50-196,175.97-85,578.81

Finding the Fourth Proportional to 142,156.50, 196,175.97 and 85,578.81

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Solution

The fourth proportional to 142,156.50, 196,175.97 and 85,578.81 is: 118,098.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,156.50 : 196,175.97 = 85,578.81 : x
  2. Step 2: Convert to fraction form
    142,156.50/196,175.97 = 85,578.81/x
  3. Step 3: Cross multiply
    142,156.50x = 196,175.97 × 85,578.81
  4. Step 4: Simplify right side
    142,156.50x = 16,788,506,063.20
  5. Step 5: Solve for x
    x = 16,788,506,063.20/142,156.50
  6. Step 6: Final answer
    x = 118,098.76

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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.