Home / 138,990.28-208,317.76-64,007.76

Finding the Fourth Proportional to 138,990.28, 208,317.76 and 64,007.76

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Solution

The fourth proportional to 138,990.28, 208,317.76 and 64,007.76 is: 95,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,990.28 : 208,317.76 = 64,007.76 : x
  2. Step 2: Convert to fraction form
    138,990.28/208,317.76 = 64,007.76/x
  3. Step 3: Cross multiply
    138,990.28x = 208,317.76 × 64,007.76
  4. Step 4: Simplify right side
    138,990.28x = 13,333,953,185.82
  5. Step 5: Solve for x
    x = 13,333,953,185.82/138,990.28
  6. Step 6: Final answer
    x = 95,934.43

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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.