Home / 142,374,138.88-196,474,542.44-83,642,157.92

Finding the Fourth Proportional to 142,374,138.88, 196,474,542.44 and 83,642,157.92

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Solution

The fourth proportional to 142,374,138.88, 196,474,542.44 and 83,642,157.92 is: 115,425,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,374,138.88 : 196,474,542.44 = 83,642,157.92 : x
  2. Step 2: Convert to fraction form
    142,374,138.88/196,474,542.44 = 83,642,157.92/x
  3. Step 3: Cross multiply
    142,374,138.88x = 196,474,542.44 × 83,642,157.92
  4. Step 4: Simplify right side
    142,374,138.88x = 16,433,554,706,026,222
  5. Step 5: Solve for x
    x = 16,433,554,706,026,222/142,374,138.88
  6. Step 6: Final answer
    x = 115,425,138.55

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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.