Home / 131,720.49-181,774.31-72,104.49

Finding the Fourth Proportional to 131,720.49, 181,774.31 and 72,104.49

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Solution

The fourth proportional to 131,720.49, 181,774.31 and 72,104.49 is: 99,504.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,720.49 : 181,774.31 = 72,104.49 : x
  2. Step 2: Convert to fraction form
    131,720.49/181,774.31 = 72,104.49/x
  3. Step 3: Cross multiply
    131,720.49x = 181,774.31 × 72,104.49
  4. Step 4: Simplify right side
    131,720.49x = 13,106,743,557.13
  5. Step 5: Solve for x
    x = 13,106,743,557.13/131,720.49
  6. Step 6: Final answer
    x = 99,504.21

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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.