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Finding the Fourth Proportional to 100,933.40, 151,181.40 and 83,437.40

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Solution

The fourth proportional to 100,933.40, 151,181.40 and 83,437.40 is: 124,975.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,933.40 : 151,181.40 = 83,437.40 : x
  2. Step 2: Convert to fraction form
    100,933.40/151,181.40 = 83,437.40/x
  3. Step 3: Cross multiply
    100,933.40x = 151,181.40 × 83,437.40
  4. Step 4: Simplify right side
    100,933.40x = 12,614,182,944.36
  5. Step 5: Solve for x
    x = 12,614,182,944.36/100,933.40
  6. Step 6: Final answer
    x = 124,975.31

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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.