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Finding the Fourth Proportional to 140,240.64, 193,528.64 and 76,576.96

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Solution

The fourth proportional to 140,240.64, 193,528.64 and 76,576.96 is: 105,674.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,240.64 : 193,528.64 = 76,576.96 : x
  2. Step 2: Convert to fraction form
    140,240.64/193,528.64 = 76,576.96/x
  3. Step 3: Cross multiply
    140,240.64x = 193,528.64 × 76,576.96
  4. Step 4: Simplify right side
    140,240.64x = 14,819,834,924.13
  5. Step 5: Solve for x
    x = 14,819,834,924.13/140,240.64
  6. Step 6: Final answer
    x = 105,674.32

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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.