Home / 128,358.50-192,455.73-61,665.93

Finding the Fourth Proportional to 128,358.50, 192,455.73 and 61,665.93

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Solution

The fourth proportional to 128,358.50, 192,455.73 and 61,665.93 is: 92,459.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,358.50 : 192,455.73 = 61,665.93 : x
  2. Step 2: Convert to fraction form
    128,358.50/192,455.73 = 61,665.93/x
  3. Step 3: Cross multiply
    128,358.50x = 192,455.73 × 61,665.93
  4. Step 4: Simplify right side
    128,358.50x = 11,867,961,574.28
  5. Step 5: Solve for x
    x = 11,867,961,574.28/128,358.50
  6. Step 6: Final answer
    x = 92,459.49

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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.