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Finding the Fourth Proportional to 124,770.34, 172,200.63 and 79,433.84

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Solution

The fourth proportional to 124,770.34, 172,200.63 and 79,433.84 is: 109,629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,770.34 : 172,200.63 = 79,433.84 : x
  2. Step 2: Convert to fraction form
    124,770.34/172,200.63 = 79,433.84/x
  3. Step 3: Cross multiply
    124,770.34x = 172,200.63 × 79,433.84
  4. Step 4: Simplify right side
    124,770.34x = 13,678,557,291.32
  5. Step 5: Solve for x
    x = 13,678,557,291.32/124,770.34
  6. Step 6: Final answer
    x = 109,629.88

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1.5x scale

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.