Home / 128,130.21-192,196.02-84,036.21

Finding the Fourth Proportional to 128,130.21, 192,196.02 and 84,036.21

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Solution

The fourth proportional to 128,130.21, 192,196.02 and 84,036.21 is: 126,054.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,130.21 : 192,196.02 = 84,036.21 : x
  2. Step 2: Convert to fraction form
    128,130.21/192,196.02 = 84,036.21/x
  3. Step 3: Cross multiply
    128,130.21x = 192,196.02 × 84,036.21
  4. Step 4: Simplify right side
    128,130.21x = 16,151,425,097.88
  5. Step 5: Solve for x
    x = 16,151,425,097.88/128,130.21
  6. Step 6: Final answer
    x = 126,054.78

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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.