Home / 423,741.12-635,542.56-128,184

Finding the Fourth Proportional to 423,741.12, 635,542.56 and 128,184

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Solution

The fourth proportional to 423,741.12, 635,542.56 and 128,184 is: 192,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,741.12 : 635,542.56 = 128,184 : x
  2. Step 2: Convert to fraction form
    423,741.12/635,542.56 = 128,184/x
  3. Step 3: Cross multiply
    423,741.12x = 635,542.56 × 128,184
  4. Step 4: Simplify right side
    423,741.12x = 81,466,387,511.04
  5. Step 5: Solve for x
    x = 81,466,387,511.04/423,741.12
  6. Step 6: Final answer
    x = 192,255.09

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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.