Home / 128,359.87-192,457.79-61,667.31

Finding the Fourth Proportional to 128,359.87, 192,457.79 and 61,667.31

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Solution

The fourth proportional to 128,359.87, 192,457.79 and 61,667.31 is: 92,461.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,359.87 : 192,457.79 = 61,667.31 : x
  2. Step 2: Convert to fraction form
    128,359.87/192,457.79 = 61,667.31/x
  3. Step 3: Cross multiply
    128,359.87x = 192,457.79 × 61,667.31
  4. Step 4: Simplify right side
    128,359.87x = 11,868,353,389.72
  5. Step 5: Solve for x
    x = 11,868,353,389.72/128,359.87
  6. Step 6: Final answer
    x = 92,461.56

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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.