Home / 189,403.90-261,422.10-108,878.14

Finding the Fourth Proportional to 189,403.90, 261,422.10 and 108,878.14

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Solution

The fourth proportional to 189,403.90, 261,422.10 and 108,878.14 is: 150,277.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,403.90 : 261,422.10 = 108,878.14 : x
  2. Step 2: Convert to fraction form
    189,403.90/261,422.10 = 108,878.14/x
  3. Step 3: Cross multiply
    189,403.90x = 261,422.10 × 108,878.14
  4. Step 4: Simplify right side
    189,403.90x = 28,463,152,002.89
  5. Step 5: Solve for x
    x = 28,463,152,002.89/189,403.90
  6. Step 6: Final answer
    x = 150,277.54

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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.