Home / 131,989.62-182,128.26-74,636.76

Finding the Fourth Proportional to 131,989.62, 182,128.26 and 74,636.76

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Solution

The fourth proportional to 131,989.62, 182,128.26 and 74,636.76 is: 102,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,989.62 : 182,128.26 = 74,636.76 : x
  2. Step 2: Convert to fraction form
    131,989.62/182,128.26 = 74,636.76/x
  3. Step 3: Cross multiply
    131,989.62x = 182,128.26 × 74,636.76
  4. Step 4: Simplify right side
    131,989.62x = 13,593,463,230.84
  5. Step 5: Solve for x
    x = 13,593,463,230.84/131,989.62
  6. Step 6: Final answer
    x = 102,988.88

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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.