Home / 138,931.99-208,407.17-54,685.51

Finding the Fourth Proportional to 138,931.99, 208,407.17 and 54,685.51

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Solution

The fourth proportional to 138,931.99, 208,407.17 and 54,685.51 is: 82,031.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,931.99 : 208,407.17 = 54,685.51 : x
  2. Step 2: Convert to fraction form
    138,931.99/208,407.17 = 54,685.51/x
  3. Step 3: Cross multiply
    138,931.99x = 208,407.17 × 54,685.51
  4. Step 4: Simplify right side
    138,931.99x = 11,396,852,379.11
  5. Step 5: Solve for x
    x = 11,396,852,379.11/138,931.99
  6. Step 6: Final answer
    x = 82,031.88

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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.