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Finding the Fourth Proportional to 128,032.60, 192,048.90 and 122,848.60

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Solution

The fourth proportional to 128,032.60, 192,048.90 and 122,848.60 is: 184,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,032.60 : 192,048.90 = 122,848.60 : x
  2. Step 2: Convert to fraction form
    128,032.60/192,048.90 = 122,848.60/x
  3. Step 3: Cross multiply
    128,032.60x = 192,048.90 × 122,848.60
  4. Step 4: Simplify right side
    128,032.60x = 23,592,938,496.54
  5. Step 5: Solve for x
    x = 23,592,938,496.54/128,032.60
  6. Step 6: Final answer
    x = 184,272.90

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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.