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Finding the Fourth Proportional to 128,166.70, 192,192.45 and 49,254.70

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Solution

The fourth proportional to 128,166.70, 192,192.45 and 49,254.70 is: 73,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,166.70 : 192,192.45 = 49,254.70 : x
  2. Step 2: Convert to fraction form
    128,166.70/192,192.45 = 49,254.70/x
  3. Step 3: Cross multiply
    128,166.70x = 192,192.45 × 49,254.70
  4. Step 4: Simplify right side
    128,166.70x = 9,466,381,467.02
  5. Step 5: Solve for x
    x = 9,466,381,467.02/128,166.70
  6. Step 6: Final answer
    x = 73,859.91

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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.