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Finding the Fourth Proportional to 100,518.87, 150,779.48 and 25,638.87

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Solution

The fourth proportional to 100,518.87, 150,779.48 and 25,638.87 is: 38,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,518.87 : 150,779.48 = 25,638.87 : x
  2. Step 2: Convert to fraction form
    100,518.87/150,779.48 = 25,638.87/x
  3. Step 3: Cross multiply
    100,518.87x = 150,779.48 × 25,638.87
  4. Step 4: Simplify right side
    100,518.87x = 3,865,815,358.19
  5. Step 5: Solve for x
    x = 3,865,815,358.19/100,518.87
  6. Step 6: Final answer
    x = 38,458.60

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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.