Home / 138,617.08-191,290.88-84,150.26

Finding the Fourth Proportional to 138,617.08, 191,290.88 and 84,150.26

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Solution

The fourth proportional to 138,617.08, 191,290.88 and 84,150.26 is: 116,126.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,617.08 : 191,290.88 = 84,150.26 : x
  2. Step 2: Convert to fraction form
    138,617.08/191,290.88 = 84,150.26/x
  3. Step 3: Cross multiply
    138,617.08x = 191,290.88 × 84,150.26
  4. Step 4: Simplify right side
    138,617.08x = 16,097,177,287.63
  5. Step 5: Solve for x
    x = 16,097,177,287.63/138,617.08
  6. Step 6: Final answer
    x = 116,126.94

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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.