Home / 105,249.85-157,899.41-71,985.58

Finding the Fourth Proportional to 105,249.85, 157,899.41 and 71,985.58

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Solution

The fourth proportional to 105,249.85, 157,899.41 and 71,985.58 is: 107,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,249.85 : 157,899.41 = 71,985.58 : x
  2. Step 2: Convert to fraction form
    105,249.85/157,899.41 = 71,985.58/x
  3. Step 3: Cross multiply
    105,249.85x = 157,899.41 × 71,985.58
  4. Step 4: Simplify right side
    105,249.85x = 11,366,480,610.51
  5. Step 5: Solve for x
    x = 11,366,480,610.51/105,249.85
  6. Step 6: Final answer
    x = 107,995.22

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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.