Home / 133,685.78-184,417.38-90,650.72

Finding the Fourth Proportional to 133,685.78, 184,417.38 and 90,650.72

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Solution

The fourth proportional to 133,685.78, 184,417.38 and 90,650.72 is: 125,051.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,685.78 : 184,417.38 = 90,650.72 : x
  2. Step 2: Convert to fraction form
    133,685.78/184,417.38 = 90,650.72/x
  3. Step 3: Cross multiply
    133,685.78x = 184,417.38 × 90,650.72
  4. Step 4: Simplify right side
    133,685.78x = 16,717,567,355.43
  5. Step 5: Solve for x
    x = 16,717,567,355.43/133,685.78
  6. Step 6: Final answer
    x = 125,051.21

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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.