Home / 140,681.27-194,145.05-77,019.53

Finding the Fourth Proportional to 140,681.27, 194,145.05 and 77,019.53

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Solution

The fourth proportional to 140,681.27, 194,145.05 and 77,019.53 is: 106,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,681.27 : 194,145.05 = 77,019.53 : x
  2. Step 2: Convert to fraction form
    140,681.27/194,145.05 = 77,019.53/x
  3. Step 3: Cross multiply
    140,681.27x = 194,145.05 × 77,019.53
  4. Step 4: Simplify right side
    140,681.27x = 14,952,959,724.65
  5. Step 5: Solve for x
    x = 14,952,959,724.65/140,681.27
  6. Step 6: Final answer
    x = 106,289.63

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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.