Home / 145,628.96-218,481.64-45,785.12

Finding the Fourth Proportional to 145,628.96, 218,481.64 and 45,785.12

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Solution

The fourth proportional to 145,628.96, 218,481.64 and 45,785.12 is: 68,689.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,628.96 : 218,481.64 = 45,785.12 : x
  2. Step 2: Convert to fraction form
    145,628.96/218,481.64 = 45,785.12/x
  3. Step 3: Cross multiply
    145,628.96x = 218,481.64 × 45,785.12
  4. Step 4: Simplify right side
    145,628.96x = 10,003,208,105.20
  5. Step 5: Solve for x
    x = 10,003,208,105.20/145,628.96
  6. Step 6: Final answer
    x = 68,689.69

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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.