Home / 128,534.40-192,594.24-66,015.36

Finding the Fourth Proportional to 128,534.40, 192,594.24 and 66,015.36

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Solution

The fourth proportional to 128,534.40, 192,594.24 and 66,015.36 is: 98,916.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,534.40 : 192,594.24 = 66,015.36 : x
  2. Step 2: Convert to fraction form
    128,534.40/192,594.24 = 66,015.36/x
  3. Step 3: Cross multiply
    128,534.40x = 192,594.24 × 66,015.36
  4. Step 4: Simplify right side
    128,534.40x = 12,714,178,087.53
  5. Step 5: Solve for x
    x = 12,714,178,087.53/128,534.40
  6. Step 6: Final answer
    x = 98,916.54

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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.