Home / 104,985.15-157,419.90-71,742.75

Finding the Fourth Proportional to 104,985.15, 157,419.90 and 71,742.75

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Solution

The fourth proportional to 104,985.15, 157,419.90 and 71,742.75 is: 107,574.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,985.15 : 157,419.90 = 71,742.75 : x
  2. Step 2: Convert to fraction form
    104,985.15/157,419.90 = 71,742.75/x
  3. Step 3: Cross multiply
    104,985.15x = 157,419.90 × 71,742.75
  4. Step 4: Simplify right side
    104,985.15x = 11,293,736,530.73
  5. Step 5: Solve for x
    x = 11,293,736,530.73/104,985.15
  6. Step 6: Final answer
    x = 107,574.61

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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.