Home / 128,477.73-192,638.55-64,361.31

Finding the Fourth Proportional to 128,477.73, 192,638.55 and 64,361.31

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Solution

The fourth proportional to 128,477.73, 192,638.55 and 64,361.31 is: 96,502.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,477.73 : 192,638.55 = 64,361.31 : x
  2. Step 2: Convert to fraction form
    128,477.73/192,638.55 = 64,361.31/x
  3. Step 3: Cross multiply
    128,477.73x = 192,638.55 × 64,361.31
  4. Step 4: Simplify right side
    128,477.73x = 12,398,468,953.46
  5. Step 5: Solve for x
    x = 12,398,468,953.46/128,477.73
  6. Step 6: Final answer
    x = 96,502.86

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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.