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Finding the Fourth Proportional to 156,100.59, 215,418.74 and 84,480.57

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Solution

The fourth proportional to 156,100.59, 215,418.74 and 84,480.57 is: 116,583.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,100.59 : 215,418.74 = 84,480.57 : x
  2. Step 2: Convert to fraction form
    156,100.59/215,418.74 = 84,480.57/x
  3. Step 3: Cross multiply
    156,100.59x = 215,418.74 × 84,480.57
  4. Step 4: Simplify right side
    156,100.59x = 18,198,697,521.48
  5. Step 5: Solve for x
    x = 18,198,697,521.48/156,100.59
  6. Step 6: Final answer
    x = 116,583.14

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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.