Home / 131,288.45-181,177.13-71,672.45

Finding the Fourth Proportional to 131,288.45, 181,177.13 and 71,672.45

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Solution

The fourth proportional to 131,288.45, 181,177.13 and 71,672.45 is: 98,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,288.45 : 181,177.13 = 71,672.45 : x
  2. Step 2: Convert to fraction form
    131,288.45/181,177.13 = 71,672.45/x
  3. Step 3: Cross multiply
    131,288.45x = 181,177.13 × 71,672.45
  4. Step 4: Simplify right side
    131,288.45x = 12,985,408,064.36
  5. Step 5: Solve for x
    x = 12,985,408,064.36/131,288.45
  6. Step 6: Final answer
    x = 98,907.47

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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.