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Finding the Fourth Proportional to 140,458.40, 210,770.72 and 51,774.20

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Solution

The fourth proportional to 140,458.40, 210,770.72 and 51,774.20 is: 77,691.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,458.40 : 210,770.72 = 51,774.20 : x
  2. Step 2: Convert to fraction form
    140,458.40/210,770.72 = 51,774.20/x
  3. Step 3: Cross multiply
    140,458.40x = 210,770.72 × 51,774.20
  4. Step 4: Simplify right side
    140,458.40x = 10,912,485,411.42
  5. Step 5: Solve for x
    x = 10,912,485,411.42/140,458.40
  6. Step 6: Final answer
    x = 77,691.94

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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.