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Finding the Fourth Proportional to 140,010.40, 210,015.60 and 73,424.80

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Solution

The fourth proportional to 140,010.40, 210,015.60 and 73,424.80 is: 110,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,010.40 : 210,015.60 = 73,424.80 : x
  2. Step 2: Convert to fraction form
    140,010.40/210,015.60 = 73,424.80/x
  3. Step 3: Cross multiply
    140,010.40x = 210,015.60 × 73,424.80
  4. Step 4: Simplify right side
    140,010.40x = 15,420,353,426.88
  5. Step 5: Solve for x
    x = 15,420,353,426.88/140,010.40
  6. Step 6: Final answer
    x = 110,137.20

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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.