Home / 128,208.32-192,051.36-104,600

Finding the Fourth Proportional to 128,208.32, 192,051.36 and 104,600

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Solution

The fourth proportional to 128,208.32, 192,051.36 and 104,600 is: 156,686.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,208.32 : 192,051.36 = 104,600 : x
  2. Step 2: Convert to fraction form
    128,208.32/192,051.36 = 104,600/x
  3. Step 3: Cross multiply
    128,208.32x = 192,051.36 × 104,600
  4. Step 4: Simplify right side
    128,208.32x = 20,088,572,256
  5. Step 5: Solve for x
    x = 20,088,572,256/128,208.32
  6. Step 6: Final answer
    x = 156,686.96

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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.