Home / 138,931.74-208,406.79-54,685.26

Finding the Fourth Proportional to 138,931.74, 208,406.79 and 54,685.26

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Solution

The fourth proportional to 138,931.74, 208,406.79 and 54,685.26 is: 82,031.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,931.74 : 208,406.79 = 54,685.26 : x
  2. Step 2: Convert to fraction form
    138,931.74/208,406.79 = 54,685.26/x
  3. Step 3: Cross multiply
    138,931.74x = 208,406.79 × 54,685.26
  4. Step 4: Simplify right side
    138,931.74x = 11,396,779,496.92
  5. Step 5: Solve for x
    x = 11,396,779,496.92/138,931.74
  6. Step 6: Final answer
    x = 82,031.50

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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.