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Finding the Fourth Proportional to 140,491.60, 210,737.40 and 139,616.80

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Solution

The fourth proportional to 140,491.60, 210,737.40 and 139,616.80 is: 209,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,491.60 : 210,737.40 = 139,616.80 : x
  2. Step 2: Convert to fraction form
    140,491.60/210,737.40 = 139,616.80/x
  3. Step 3: Cross multiply
    140,491.60x = 210,737.40 × 139,616.80
  4. Step 4: Simplify right side
    140,491.60x = 29,422,481,428.32
  5. Step 5: Solve for x
    x = 29,422,481,428.32/140,491.60
  6. Step 6: Final answer
    x = 209,425.20

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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.