Home / 131,175.60-196,982.10-86,998.20

Finding the Fourth Proportional to 131,175.60, 196,982.10 and 86,998.20

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Solution

The fourth proportional to 131,175.60, 196,982.10 and 86,998.20 is: 130,642.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,175.60 : 196,982.10 = 86,998.20 : x
  2. Step 2: Convert to fraction form
    131,175.60/196,982.10 = 86,998.20/x
  3. Step 3: Cross multiply
    131,175.60x = 196,982.10 × 86,998.20
  4. Step 4: Simplify right side
    131,175.60x = 17,137,088,132.22
  5. Step 5: Solve for x
    x = 17,137,088,132.22/131,175.60
  6. Step 6: Final answer
    x = 130,642.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.