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Finding the Fourth Proportional to 155,549.01, 214,678.50 and 87,579.48

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Solution

The fourth proportional to 155,549.01, 214,678.50 and 87,579.48 is: 120,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,549.01 : 214,678.50 = 87,579.48 : x
  2. Step 2: Convert to fraction form
    155,549.01/214,678.50 = 87,579.48/x
  3. Step 3: Cross multiply
    155,549.01x = 214,678.50 × 87,579.48
  4. Step 4: Simplify right side
    155,549.01x = 18,801,431,397.18
  5. Step 5: Solve for x
    x = 18,801,431,397.18/155,549.01
  6. Step 6: Final answer
    x = 120,871.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.