Home / 155,188.83-214,153.68-90,664.05

Finding the Fourth Proportional to 155,188.83, 214,153.68 and 90,664.05

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Solution

The fourth proportional to 155,188.83, 214,153.68 and 90,664.05 is: 125,112.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,188.83 : 214,153.68 = 90,664.05 : x
  2. Step 2: Convert to fraction form
    155,188.83/214,153.68 = 90,664.05/x
  3. Step 3: Cross multiply
    155,188.83x = 214,153.68 × 90,664.05
  4. Step 4: Simplify right side
    155,188.83x = 19,416,039,951.20
  5. Step 5: Solve for x
    x = 19,416,039,951.20/155,188.83
  6. Step 6: Final answer
    x = 125,112.35

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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.