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Finding the Fourth Proportional to 156,218.45, 215,581.03 and 84,598.45

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Solution

The fourth proportional to 156,218.45, 215,581.03 and 84,598.45 is: 116,745.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,218.45 : 215,581.03 = 84,598.45 : x
  2. Step 2: Convert to fraction form
    156,218.45/215,581.03 = 84,598.45/x
  3. Step 3: Cross multiply
    156,218.45x = 215,581.03 × 84,598.45
  4. Step 4: Simplify right side
    156,218.45x = 18,237,820,987.40
  5. Step 5: Solve for x
    x = 18,237,820,987.40/156,218.45
  6. Step 6: Final answer
    x = 116,745.63

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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.