Home / 121,518.90-167,692.14-66,326.10

Finding the Fourth Proportional to 121,518.90, 167,692.14 and 66,326.10

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Solution

The fourth proportional to 121,518.90, 167,692.14 and 66,326.10 is: 91,527.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,518.90 : 167,692.14 = 66,326.10 : x
  2. Step 2: Convert to fraction form
    121,518.90/167,692.14 = 66,326.10/x
  3. Step 3: Cross multiply
    121,518.90x = 167,692.14 × 66,326.10
  4. Step 4: Simplify right side
    121,518.90x = 11,122,365,646.85
  5. Step 5: Solve for x
    x = 11,122,365,646.85/121,518.90
  6. Step 6: Final answer
    x = 91,527.87

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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.