Home / 100,285.31-138,394.79-54,962.29

Finding the Fourth Proportional to 100,285.31, 138,394.79 and 54,962.29

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Solution

The fourth proportional to 100,285.31, 138,394.79 and 54,962.29 is: 75,848.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,285.31 : 138,394.79 = 54,962.29 : x
  2. Step 2: Convert to fraction form
    100,285.31/138,394.79 = 54,962.29/x
  3. Step 3: Cross multiply
    100,285.31x = 138,394.79 × 54,962.29
  4. Step 4: Simplify right side
    100,285.31x = 7,606,494,582.47
  5. Step 5: Solve for x
    x = 7,606,494,582.47/100,285.31
  6. Step 6: Final answer
    x = 75,848.54

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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.