Home / 131,288.57-181,177.31-71,672.57

Finding the Fourth Proportional to 131,288.57, 181,177.31 and 71,672.57

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Solution

The fourth proportional to 131,288.57, 181,177.31 and 71,672.57 is: 98,907.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,288.57 : 181,177.31 = 71,672.57 : x
  2. Step 2: Convert to fraction form
    131,288.57/181,177.31 = 71,672.57/x
  3. Step 3: Cross multiply
    131,288.57x = 181,177.31 × 71,672.57
  4. Step 4: Simplify right side
    131,288.57x = 12,985,443,075.02
  5. Step 5: Solve for x
    x = 12,985,443,075.02/131,288.57
  6. Step 6: Final answer
    x = 98,907.64

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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.