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Finding the Fourth Proportional to 140,455.80, 210,683.70 and 122,959.80

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Solution

The fourth proportional to 140,455.80, 210,683.70 and 122,959.80 is: 184,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,455.80 : 210,683.70 = 122,959.80 : x
  2. Step 2: Convert to fraction form
    140,455.80/210,683.70 = 122,959.80/x
  3. Step 3: Cross multiply
    140,455.80x = 210,683.70 × 122,959.80
  4. Step 4: Simplify right side
    140,455.80x = 25,905,625,615.26
  5. Step 5: Solve for x
    x = 25,905,625,615.26/140,455.80
  6. Step 6: Final answer
    x = 184,439.70

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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.