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Finding the Fourth Proportional to 155,754.60, 214,941.19 and 84,134.59

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Solution

The fourth proportional to 155,754.60, 214,941.19 and 84,134.59 is: 116,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,754.60 : 214,941.19 = 84,134.59 : x
  2. Step 2: Convert to fraction form
    155,754.60/214,941.19 = 84,134.59/x
  3. Step 3: Cross multiply
    155,754.60x = 214,941.19 × 84,134.59
  4. Step 4: Simplify right side
    155,754.60x = 18,083,988,894.76
  5. Step 5: Solve for x
    x = 18,083,988,894.76/155,754.60
  6. Step 6: Final answer
    x = 116,105.65

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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.