Home / 131,939.28-182,076.86-77,528.14

Finding the Fourth Proportional to 131,939.28, 182,076.86 and 77,528.14

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Solution

The fourth proportional to 131,939.28, 182,076.86 and 77,528.14 is: 106,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,939.28 : 182,076.86 = 77,528.14 : x
  2. Step 2: Convert to fraction form
    131,939.28/182,076.86 = 77,528.14/x
  3. Step 3: Cross multiply
    131,939.28x = 182,076.86 × 77,528.14
  4. Step 4: Simplify right side
    131,939.28x = 14,116,080,031.47
  5. Step 5: Solve for x
    x = 14,116,080,031.47/131,939.28
  6. Step 6: Final answer
    x = 106,989.22

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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.