Home / 128,880.08-193,242.47-57,789.85

Finding the Fourth Proportional to 128,880.08, 193,242.47 and 57,789.85

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Solution

The fourth proportional to 128,880.08, 193,242.47 and 57,789.85 is: 86,649.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,880.08 : 193,242.47 = 57,789.85 : x
  2. Step 2: Convert to fraction form
    128,880.08/193,242.47 = 57,789.85/x
  3. Step 3: Cross multiply
    128,880.08x = 193,242.47 × 57,789.85
  4. Step 4: Simplify right side
    128,880.08x = 11,167,453,461.40
  5. Step 5: Solve for x
    x = 11,167,453,461.40/128,880.08
  6. Step 6: Final answer
    x = 86,649.96

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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.