Home / 131,511.08-181,474.47-74,147.28

Finding the Fourth Proportional to 131,511.08, 181,474.47 and 74,147.28

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Solution

The fourth proportional to 131,511.08, 181,474.47 and 74,147.28 is: 102,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,511.08 : 181,474.47 = 74,147.28 : x
  2. Step 2: Convert to fraction form
    131,511.08/181,474.47 = 74,147.28/x
  3. Step 3: Cross multiply
    131,511.08x = 181,474.47 × 74,147.28
  4. Step 4: Simplify right side
    131,511.08x = 13,455,838,339.94
  5. Step 5: Solve for x
    x = 13,455,838,339.94/131,511.08
  6. Step 6: Final answer
    x = 102,317.15

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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.