Home / 131,135.60-196,703.40-89,145.20

Finding the Fourth Proportional to 131,135.60, 196,703.40 and 89,145.20

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Solution

The fourth proportional to 131,135.60, 196,703.40 and 89,145.20 is: 133,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,135.60 : 196,703.40 = 89,145.20 : x
  2. Step 2: Convert to fraction form
    131,135.60/196,703.40 = 89,145.20/x
  3. Step 3: Cross multiply
    131,135.60x = 196,703.40 × 89,145.20
  4. Step 4: Simplify right side
    131,135.60x = 17,535,163,933.68
  5. Step 5: Solve for x
    x = 17,535,163,933.68/131,135.60
  6. Step 6: Final answer
    x = 133,717.80

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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.