Home / 138,973.26-191,783.09-75,311.06

Finding the Fourth Proportional to 138,973.26, 191,783.09 and 75,311.06

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Solution

The fourth proportional to 138,973.26, 191,783.09 and 75,311.06 is: 103,929.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,973.26 : 191,783.09 = 75,311.06 : x
  2. Step 2: Convert to fraction form
    138,973.26/191,783.09 = 75,311.06/x
  3. Step 3: Cross multiply
    138,973.26x = 191,783.09 × 75,311.06
  4. Step 4: Simplify right side
    138,973.26x = 14,443,387,027.34
  5. Step 5: Solve for x
    x = 14,443,387,027.34/138,973.26
  6. Step 6: Final answer
    x = 103,929.25

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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.