Home / 105,221.22-157,907.34-71,402.94

Finding the Fourth Proportional to 105,221.22, 157,907.34 and 71,402.94

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Solution

The fourth proportional to 105,221.22, 157,907.34 and 71,402.94 is: 107,155.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,221.22 : 157,907.34 = 71,402.94 : x
  2. Step 2: Convert to fraction form
    105,221.22/157,907.34 = 71,402.94/x
  3. Step 3: Cross multiply
    105,221.22x = 157,907.34 × 71,402.94
  4. Step 4: Simplify right side
    105,221.22x = 11,275,048,323.58
  5. Step 5: Solve for x
    x = 11,275,048,323.58/105,221.22
  6. Step 6: Final answer
    x = 107,155.65

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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.