Home / 185,605.49-256,134.08-100,722.55

Finding the Fourth Proportional to 185,605.49, 256,134.08 and 100,722.55

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Solution

The fourth proportional to 185,605.49, 256,134.08 and 100,722.55 is: 138,996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,605.49 : 256,134.08 = 100,722.55 : x
  2. Step 2: Convert to fraction form
    185,605.49/256,134.08 = 100,722.55/x
  3. Step 3: Cross multiply
    185,605.49x = 256,134.08 × 100,722.55
  4. Step 4: Simplify right side
    185,605.49x = 25,798,477,175.89
  5. Step 5: Solve for x
    x = 25,798,477,175.89/185,605.49
  6. Step 6: Final answer
    x = 138,996.31

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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.