Home / 129,935.81-194,903.73-31,439.81

Finding the Fourth Proportional to 129,935.81, 194,903.73 and 31,439.81

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Solution

The fourth proportional to 129,935.81, 194,903.73 and 31,439.81 is: 47,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,935.81 : 194,903.73 = 31,439.81 : x
  2. Step 2: Convert to fraction form
    129,935.81/194,903.73 = 31,439.81/x
  3. Step 3: Cross multiply
    129,935.81x = 194,903.73 × 31,439.81
  4. Step 4: Simplify right side
    129,935.81x = 6,127,736,726.75
  5. Step 5: Solve for x
    x = 6,127,736,726.75/129,935.81
  6. Step 6: Final answer
    x = 47,159.72

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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.