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Finding the Fourth Proportional to 99,790.96, 149,686.08 and 25,918.96

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Solution

The fourth proportional to 99,790.96, 149,686.08 and 25,918.96 is: 38,878.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,790.96 : 149,686.08 = 25,918.96 : x
  2. Step 2: Convert to fraction form
    99,790.96/149,686.08 = 25,918.96/x
  3. Step 3: Cross multiply
    99,790.96x = 149,686.08 × 25,918.96
  4. Step 4: Simplify right side
    99,790.96x = 3,879,707,520.08
  5. Step 5: Solve for x
    x = 3,879,707,520.08/99,790.96
  6. Step 6: Final answer
    x = 38,878.35

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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.