Home / 131,237.28-181,083.60-77,531.04

Finding the Fourth Proportional to 131,237.28, 181,083.60 and 77,531.04

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Solution

The fourth proportional to 131,237.28, 181,083.60 and 77,531.04 is: 106,978.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,237.28 : 181,083.60 = 77,531.04 : x
  2. Step 2: Convert to fraction form
    131,237.28/181,083.60 = 77,531.04/x
  3. Step 3: Cross multiply
    131,237.28x = 181,083.60 × 77,531.04
  4. Step 4: Simplify right side
    131,237.28x = 14,039,599,834.94
  5. Step 5: Solve for x
    x = 14,039,599,834.94/131,237.28
  6. Step 6: Final answer
    x = 106,978.75

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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.