Home / 124,692.28-171,980.10-79,377.64

Finding the Fourth Proportional to 124,692.28, 171,980.10 and 79,377.64

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Solution

The fourth proportional to 124,692.28, 171,980.10 and 79,377.64 is: 109,480.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,692.28 : 171,980.10 = 79,377.64 : x
  2. Step 2: Convert to fraction form
    124,692.28/171,980.10 = 79,377.64/x
  3. Step 3: Cross multiply
    124,692.28x = 171,980.10 × 79,377.64
  4. Step 4: Simplify right side
    124,692.28x = 13,651,374,464.96
  5. Step 5: Solve for x
    x = 13,651,374,464.96/124,692.28
  6. Step 6: Final answer
    x = 109,480.51

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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.