Home / 272,869.20-409,348.60-85,835.60

Finding the Fourth Proportional to 272,869.20, 409,348.60 and 85,835.60

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Solution

The fourth proportional to 272,869.20, 409,348.60 and 85,835.60 is: 128,767.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,869.20 : 409,348.60 = 85,835.60 : x
  2. Step 2: Convert to fraction form
    272,869.20/409,348.60 = 85,835.60/x
  3. Step 3: Cross multiply
    272,869.20x = 409,348.60 × 85,835.60
  4. Step 4: Simplify right side
    272,869.20x = 35,136,682,690.16
  5. Step 5: Solve for x
    x = 35,136,682,690.16/272,869.20
  6. Step 6: Final answer
    x = 128,767.49

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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.