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Finding the Fourth Proportional to 140,432.30, 210,648.45 and 122,936.30

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Solution

The fourth proportional to 140,432.30, 210,648.45 and 122,936.30 is: 184,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,432.30 : 210,648.45 = 122,936.30 : x
  2. Step 2: Convert to fraction form
    140,432.30/210,648.45 = 122,936.30/x
  3. Step 3: Cross multiply
    140,432.30x = 210,648.45 × 122,936.30
  4. Step 4: Simplify right side
    140,432.30x = 25,896,341,043.74
  5. Step 5: Solve for x
    x = 25,896,341,043.74/140,432.30
  6. Step 6: Final answer
    x = 184,404.45

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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.