Home / 131,292.32-181,183.92-74,702.48

Finding the Fourth Proportional to 131,292.32, 181,183.92 and 74,702.48

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Solution

The fourth proportional to 131,292.32, 181,183.92 and 74,702.48 is: 103,089.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,292.32 : 181,183.92 = 74,702.48 : x
  2. Step 2: Convert to fraction form
    131,292.32/181,183.92 = 74,702.48/x
  3. Step 3: Cross multiply
    131,292.32x = 181,183.92 × 74,702.48
  4. Step 4: Simplify right side
    131,292.32x = 13,534,888,160.12
  5. Step 5: Solve for x
    x = 13,534,888,160.12/131,292.32
  6. Step 6: Final answer
    x = 103,089.72

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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.