Home / 128,510.50-192,808.81-44,328.78

Finding the Fourth Proportional to 128,510.50, 192,808.81 and 44,328.78

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Solution

The fourth proportional to 128,510.50, 192,808.81 and 44,328.78 is: 66,508.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,510.50 : 192,808.81 = 44,328.78 : x
  2. Step 2: Convert to fraction form
    128,510.50/192,808.81 = 44,328.78/x
  3. Step 3: Cross multiply
    128,510.50x = 192,808.81 × 44,328.78
  4. Step 4: Simplify right side
    128,510.50x = 8,546,978,411.92
  5. Step 5: Solve for x
    x = 8,546,978,411.92/128,510.50
  6. Step 6: Final answer
    x = 66,508.01

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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.