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Finding the Fourth Proportional to 128,088.84, 192,142.48 and 49,203.12

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Solution

The fourth proportional to 128,088.84, 192,142.48 and 49,203.12 is: 73,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,088.84 : 192,142.48 = 49,203.12 : x
  2. Step 2: Convert to fraction form
    128,088.84/192,142.48 = 49,203.12/x
  3. Step 3: Cross multiply
    128,088.84x = 192,142.48 × 49,203.12
  4. Step 4: Simplify right side
    128,088.84x = 9,454,009,500.54
  5. Step 5: Solve for x
    x = 9,454,009,500.54/128,088.84
  6. Step 6: Final answer
    x = 73,808.22

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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.