Home / 138,923.74-208,435.56-54,637.17

Finding the Fourth Proportional to 138,923.74, 208,435.56 and 54,637.17

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Solution

The fourth proportional to 138,923.74, 208,435.56 and 54,637.17 is: 81,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,923.74 : 208,435.56 = 54,637.17 : x
  2. Step 2: Convert to fraction form
    138,923.74/208,435.56 = 54,637.17/x
  3. Step 3: Cross multiply
    138,923.74x = 208,435.56 × 54,637.17
  4. Step 4: Simplify right side
    138,923.74x = 11,388,329,125.77
  5. Step 5: Solve for x
    x = 11,388,329,125.77/138,923.74
  6. Step 6: Final answer
    x = 81,975.40

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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.