Home / 100,323.33-138,442.50-55,000.32

Finding the Fourth Proportional to 100,323.33, 138,442.50 and 55,000.32

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Solution

The fourth proportional to 100,323.33, 138,442.50 and 55,000.32 is: 75,898.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,323.33 : 138,442.50 = 55,000.32 : x
  2. Step 2: Convert to fraction form
    100,323.33/138,442.50 = 55,000.32/x
  3. Step 3: Cross multiply
    100,323.33x = 138,442.50 × 55,000.32
  4. Step 4: Simplify right side
    100,323.33x = 7,614,381,801.60
  5. Step 5: Solve for x
    x = 7,614,381,801.60/100,323.33
  6. Step 6: Final answer
    x = 75,898.42

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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.