Home / 128,176.65-192,283.20-39,437.37

Finding the Fourth Proportional to 128,176.65, 192,283.20 and 39,437.37

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Solution

The fourth proportional to 128,176.65, 192,283.20 and 39,437.37 is: 59,161.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,176.65 : 192,283.20 = 39,437.37 : x
  2. Step 2: Convert to fraction form
    128,176.65/192,283.20 = 39,437.37/x
  3. Step 3: Cross multiply
    128,176.65x = 192,283.20 × 39,437.37
  4. Step 4: Simplify right side
    128,176.65x = 7,583,143,703.18
  5. Step 5: Solve for x
    x = 7,583,143,703.18/128,176.65
  6. Step 6: Final answer
    x = 59,161.66

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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.