Home / 131,320.85-196,665.63-74,990.42

Finding the Fourth Proportional to 131,320.85, 196,665.63 and 74,990.42

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Solution

The fourth proportional to 131,320.85, 196,665.63 and 74,990.42 is: 112,305.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,320.85 : 196,665.63 = 74,990.42 : x
  2. Step 2: Convert to fraction form
    131,320.85/196,665.63 = 74,990.42/x
  3. Step 3: Cross multiply
    131,320.85x = 196,665.63 × 74,990.42
  4. Step 4: Simplify right side
    131,320.85x = 14,748,037,209.94
  5. Step 5: Solve for x
    x = 14,748,037,209.94/131,320.85
  6. Step 6: Final answer
    x = 112,305.37

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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.