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Finding the Fourth Proportional to 140,216.70, 210,325.05 and 122,720.70

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Solution

The fourth proportional to 140,216.70, 210,325.05 and 122,720.70 is: 184,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,216.70 : 210,325.05 = 122,720.70 : x
  2. Step 2: Convert to fraction form
    140,216.70/210,325.05 = 122,720.70/x
  3. Step 3: Cross multiply
    140,216.70x = 210,325.05 × 122,720.70
  4. Step 4: Simplify right side
    140,216.70x = 25,811,237,363.54
  5. Step 5: Solve for x
    x = 25,811,237,363.54/140,216.70
  6. Step 6: Final answer
    x = 184,081.05

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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.