Home / 155,276.33-214,276.34-87,296.15

Finding the Fourth Proportional to 155,276.33, 214,276.34 and 87,296.15

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Solution

The fourth proportional to 155,276.33, 214,276.34 and 87,296.15 is: 120,465.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,276.33 : 214,276.34 = 87,296.15 : x
  2. Step 2: Convert to fraction form
    155,276.33/214,276.34 = 87,296.15/x
  3. Step 3: Cross multiply
    155,276.33x = 214,276.34 × 87,296.15
  4. Step 4: Simplify right side
    155,276.33x = 18,705,500,272.02
  5. Step 5: Solve for x
    x = 18,705,500,272.02/155,276.33
  6. Step 6: Final answer
    x = 120,465.89

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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.