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Finding the Fourth Proportional to 501,123.38, 751,728.87 and 127,146.38

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Solution

The fourth proportional to 501,123.38, 751,728.87 and 127,146.38 is: 190,730.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,123.38 : 751,728.87 = 127,146.38 : x
  2. Step 2: Convert to fraction form
    501,123.38/751,728.87 = 127,146.38/x
  3. Step 3: Cross multiply
    501,123.38x = 751,728.87 × 127,146.38
  4. Step 4: Simplify right side
    501,123.38x = 95,579,600,803.35
  5. Step 5: Solve for x
    x = 95,579,600,803.35/501,123.38
  6. Step 6: Final answer
    x = 190,730.68

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Similar ratio
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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.