Home / 131,688.39-181,732.31-74,339.17

Finding the Fourth Proportional to 131,688.39, 181,732.31 and 74,339.17

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Solution

The fourth proportional to 131,688.39, 181,732.31 and 74,339.17 is: 102,589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,688.39 : 181,732.31 = 74,339.17 : x
  2. Step 2: Convert to fraction form
    131,688.39/181,732.31 = 74,339.17/x
  3. Step 3: Cross multiply
    131,688.39x = 181,732.31 × 74,339.17
  4. Step 4: Simplify right side
    131,688.39x = 13,509,829,087.58
  5. Step 5: Solve for x
    x = 13,509,829,087.58/131,688.39
  6. Step 6: Final answer
    x = 102,589.37

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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.