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Finding the Fourth Proportional to 155,876.86, 215,110.02 and 84,256.84

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Solution

The fourth proportional to 155,876.86, 215,110.02 and 84,256.84 is: 116,274.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,876.86 : 215,110.02 = 84,256.84 : x
  2. Step 2: Convert to fraction form
    155,876.86/215,110.02 = 84,256.84/x
  3. Step 3: Cross multiply
    155,876.86x = 215,110.02 × 84,256.84
  4. Step 4: Simplify right side
    155,876.86x = 18,124,490,537.54
  5. Step 5: Solve for x
    x = 18,124,490,537.54/155,876.86
  6. Step 6: Final answer
    x = 116,274.41

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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.