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Finding the Fourth Proportional to 185,548.50, 256,056.93 and 100,665.54

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Solution

The fourth proportional to 185,548.50, 256,056.93 and 100,665.54 is: 138,918.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,548.50 : 256,056.93 = 100,665.54 : x
  2. Step 2: Convert to fraction form
    185,548.50/256,056.93 = 100,665.54/x
  3. Step 3: Cross multiply
    185,548.50x = 256,056.93 × 100,665.54
  4. Step 4: Simplify right side
    185,548.50x = 25,776,109,129.19
  5. Step 5: Solve for x
    x = 25,776,109,129.19/185,548.50
  6. Step 6: Final answer
    x = 138,918.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.