Home / 128,213.40-192,355.65-53,368.80

Finding the Fourth Proportional to 128,213.40, 192,355.65 and 53,368.80

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Solution

The fourth proportional to 128,213.40, 192,355.65 and 53,368.80 is: 80,068.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,213.40 : 192,355.65 = 53,368.80 : x
  2. Step 2: Convert to fraction form
    128,213.40/192,355.65 = 53,368.80/x
  3. Step 3: Cross multiply
    128,213.40x = 192,355.65 × 53,368.80
  4. Step 4: Simplify right side
    128,213.40x = 10,265,790,213.72
  5. Step 5: Solve for x
    x = 10,265,790,213.72/128,213.40
  6. Step 6: Final answer
    x = 80,068.00

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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.