Home / 99,991.26-149,820.75-70,346.79

Finding the Fourth Proportional to 99,991.26, 149,820.75 and 70,346.79

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Solution

The fourth proportional to 99,991.26, 149,820.75 and 70,346.79 is: 105,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,991.26 : 149,820.75 = 70,346.79 : x
  2. Step 2: Convert to fraction form
    99,991.26/149,820.75 = 70,346.79/x
  3. Step 3: Cross multiply
    99,991.26x = 149,820.75 × 70,346.79
  4. Step 4: Simplify right side
    99,991.26x = 10,539,408,837.89
  5. Step 5: Solve for x
    x = 10,539,408,837.89/99,991.26
  6. Step 6: Final answer
    x = 105,403.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.