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Finding the Fourth Proportional to 140,274.72, 193,572 and 76,600.32

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Solution

The fourth proportional to 140,274.72, 193,572 and 76,600.32 is: 105,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,274.72 : 193,572 = 76,600.32 : x
  2. Step 2: Convert to fraction form
    140,274.72/193,572 = 76,600.32/x
  3. Step 3: Cross multiply
    140,274.72x = 193,572 × 76,600.32
  4. Step 4: Simplify right side
    140,274.72x = 14,827,677,143.04
  5. Step 5: Solve for x
    x = 14,827,677,143.04/140,274.72
  6. Step 6: Final answer
    x = 105,704.56

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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.