Home / 128,756.08-193,189.20-53,893.72

Finding the Fourth Proportional to 128,756.08, 193,189.20 and 53,893.72

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Solution

The fourth proportional to 128,756.08, 193,189.20 and 53,893.72 is: 80,863.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,756.08 : 193,189.20 = 53,893.72 : x
  2. Step 2: Convert to fraction form
    128,756.08/193,189.20 = 53,893.72/x
  3. Step 3: Cross multiply
    128,756.08x = 193,189.20 × 53,893.72
  4. Step 4: Simplify right side
    128,756.08x = 10,411,684,651.82
  5. Step 5: Solve for x
    x = 10,411,684,651.82/128,756.08
  6. Step 6: Final answer
    x = 80,863.63

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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.