Home / 128,783.55-193,126.73-53,908.91

Finding the Fourth Proportional to 128,783.55, 193,126.73 and 53,908.91

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Solution

The fourth proportional to 128,783.55, 193,126.73 and 53,908.91 is: 80,843.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,783.55 : 193,126.73 = 53,908.91 : x
  2. Step 2: Convert to fraction form
    128,783.55/193,126.73 = 53,908.91/x
  3. Step 3: Cross multiply
    128,783.55x = 193,126.73 × 53,908.91
  4. Step 4: Simplify right side
    128,783.55x = 10,411,250,270.99
  5. Step 5: Solve for x
    x = 10,411,250,270.99/128,783.55
  6. Step 6: Final answer
    x = 80,843.01

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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.