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Finding the Fourth Proportional to 129,560.96, 194,445.12 and 67,249.28

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Solution

The fourth proportional to 129,560.96, 194,445.12 and 67,249.28 is: 100,927.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,560.96 : 194,445.12 = 67,249.28 : x
  2. Step 2: Convert to fraction form
    129,560.96/194,445.12 = 67,249.28/x
  3. Step 3: Cross multiply
    129,560.96x = 194,445.12 × 67,249.28
  4. Step 4: Simplify right side
    129,560.96x = 13,076,294,319.51
  5. Step 5: Solve for x
    x = 13,076,294,319.51/129,560.96
  6. Step 6: Final answer
    x = 100,927.74

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1.5x scale

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.