Home / 128,637.70-192,541.83-66,222.34

Finding the Fourth Proportional to 128,637.70, 192,541.83 and 66,222.34

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Solution

The fourth proportional to 128,637.70, 192,541.83 and 66,222.34 is: 99,120.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,637.70 : 192,541.83 = 66,222.34 : x
  2. Step 2: Convert to fraction form
    128,637.70/192,541.83 = 66,222.34/x
  3. Step 3: Cross multiply
    128,637.70x = 192,541.83 × 66,222.34
  4. Step 4: Simplify right side
    128,637.70x = 12,750,570,530.48
  5. Step 5: Solve for x
    x = 12,750,570,530.48/128,637.70
  6. Step 6: Final answer
    x = 99,120.01

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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.