Home / 131,291.52-181,176-74,697.60

Finding the Fourth Proportional to 131,291.52, 181,176 and 74,697.60

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Solution

The fourth proportional to 131,291.52, 181,176 and 74,697.60 is: 103,079.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,291.52 : 181,176 = 74,697.60 : x
  2. Step 2: Convert to fraction form
    131,291.52/181,176 = 74,697.60/x
  3. Step 3: Cross multiply
    131,291.52x = 181,176 × 74,697.60
  4. Step 4: Simplify right side
    131,291.52x = 13,533,412,377.60
  5. Step 5: Solve for x
    x = 13,533,412,377.60/131,291.52
  6. Step 6: Final answer
    x = 103,079.11

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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.