Home / 109,531.80-163,933.20-79,460.55

Finding the Fourth Proportional to 109,531.80, 163,933.20 and 79,460.55

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Solution

The fourth proportional to 109,531.80, 163,933.20 and 79,460.55 is: 118,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,531.80 : 163,933.20 = 79,460.55 : x
  2. Step 2: Convert to fraction form
    109,531.80/163,933.20 = 79,460.55/x
  3. Step 3: Cross multiply
    109,531.80x = 163,933.20 × 79,460.55
  4. Step 4: Simplify right side
    109,531.80x = 13,026,222,235.26
  5. Step 5: Solve for x
    x = 13,026,222,235.26/109,531.80
  6. Step 6: Final answer
    x = 118,926.40

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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.