Home / 214,152.60-321,107.40-81,037.20

Finding the Fourth Proportional to 214,152.60, 321,107.40 and 81,037.20

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Solution

The fourth proportional to 214,152.60, 321,107.40 and 81,037.20 is: 121,509.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,152.60 : 321,107.40 = 81,037.20 : x
  2. Step 2: Convert to fraction form
    214,152.60/321,107.40 = 81,037.20/x
  3. Step 3: Cross multiply
    214,152.60x = 321,107.40 × 81,037.20
  4. Step 4: Simplify right side
    214,152.60x = 26,021,644,595.28
  5. Step 5: Solve for x
    x = 26,021,644,595.28/214,152.60
  6. Step 6: Final answer
    x = 121,509.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.