Home / 125,943.03-188,914.32-86,380.20

Finding the Fourth Proportional to 125,943.03, 188,914.32 and 86,380.20

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Solution

The fourth proportional to 125,943.03, 188,914.32 and 86,380.20 is: 129,570.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,943.03 : 188,914.32 = 86,380.20 : x
  2. Step 2: Convert to fraction form
    125,943.03/188,914.32 = 86,380.20/x
  3. Step 3: Cross multiply
    125,943.03x = 188,914.32 × 86,380.20
  4. Step 4: Simplify right side
    125,943.03x = 16,318,456,744.46
  5. Step 5: Solve for x
    x = 16,318,456,744.46/125,943.03
  6. Step 6: Final answer
    x = 129,570.15

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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.