Home / 141,824.30-212,736.45-128,000.30

Finding the Fourth Proportional to 141,824.30, 212,736.45 and 128,000.30

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Solution

The fourth proportional to 141,824.30, 212,736.45 and 128,000.30 is: 192,000.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,824.30 : 212,736.45 = 128,000.30 : x
  2. Step 2: Convert to fraction form
    141,824.30/212,736.45 = 128,000.30/x
  3. Step 3: Cross multiply
    141,824.30x = 212,736.45 × 128,000.30
  4. Step 4: Simplify right side
    141,824.30x = 27,230,329,420.94
  5. Step 5: Solve for x
    x = 27,230,329,420.94/141,824.30
  6. Step 6: Final answer
    x = 192,000.45

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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.