Home / 129,935.72-194,903.58-31,439.72

Finding the Fourth Proportional to 129,935.72, 194,903.58 and 31,439.72

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Solution

The fourth proportional to 129,935.72, 194,903.58 and 31,439.72 is: 47,159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,935.72 : 194,903.58 = 31,439.72 : x
  2. Step 2: Convert to fraction form
    129,935.72/194,903.58 = 31,439.72/x
  3. Step 3: Cross multiply
    129,935.72x = 194,903.58 × 31,439.72
  4. Step 4: Simplify right side
    129,935.72x = 6,127,713,007.68
  5. Step 5: Solve for x
    x = 6,127,713,007.68/129,935.72
  6. Step 6: Final answer
    x = 47,159.57

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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.