Home / 131,817.06-181,907.71-71,387.80

Finding the Fourth Proportional to 131,817.06, 181,907.71 and 71,387.80

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Solution

The fourth proportional to 131,817.06, 181,907.71 and 71,387.80 is: 98,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,817.06 : 181,907.71 = 71,387.80 : x
  2. Step 2: Convert to fraction form
    131,817.06/181,907.71 = 71,387.80/x
  3. Step 3: Cross multiply
    131,817.06x = 181,907.71 × 71,387.80
  4. Step 4: Simplify right side
    131,817.06x = 12,985,991,219.94
  5. Step 5: Solve for x
    x = 12,985,991,219.94/131,817.06
  6. Step 6: Final answer
    x = 98,515.25

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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.