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Finding the Fourth Proportional to 140,063.64, 193,281.90 and 76,397.64

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Solution

The fourth proportional to 140,063.64, 193,281.90 and 76,397.64 is: 105,425.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,063.64 : 193,281.90 = 76,397.64 : x
  2. Step 2: Convert to fraction form
    140,063.64/193,281.90 = 76,397.64/x
  3. Step 3: Cross multiply
    140,063.64x = 193,281.90 × 76,397.64
  4. Step 4: Simplify right side
    140,063.64x = 14,766,281,014.72
  5. Step 5: Solve for x
    x = 14,766,281,014.72/140,063.64
  6. Step 6: Final answer
    x = 105,425.51

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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.