Home / 138,802.20-191,546.82-75,139.98

Finding the Fourth Proportional to 138,802.20, 191,546.82 and 75,139.98

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Solution

The fourth proportional to 138,802.20, 191,546.82 and 75,139.98 is: 103,693.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,802.20 : 191,546.82 = 75,139.98 : x
  2. Step 2: Convert to fraction form
    138,802.20/191,546.82 = 75,139.98/x
  3. Step 3: Cross multiply
    138,802.20x = 191,546.82 × 75,139.98
  4. Step 4: Simplify right side
    138,802.20x = 14,392,824,223.86
  5. Step 5: Solve for x
    x = 14,392,824,223.86/138,802.20
  6. Step 6: Final answer
    x = 103,693.06

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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.