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Finding the Fourth Proportional to 128,048.54, 191,977.64 and 61,425.22

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Solution

The fourth proportional to 128,048.54, 191,977.64 and 61,425.22 is: 92,092.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,048.54 : 191,977.64 = 61,425.22 : x
  2. Step 2: Convert to fraction form
    128,048.54/191,977.64 = 61,425.22/x
  3. Step 3: Cross multiply
    128,048.54x = 191,977.64 × 61,425.22
  4. Step 4: Simplify right side
    128,048.54x = 11,792,268,772.08
  5. Step 5: Solve for x
    x = 11,792,268,772.08/128,048.54
  6. Step 6: Final answer
    x = 92,092.18

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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.