Home / 145,546.82-218,345.13-66,667.80

Finding the Fourth Proportional to 145,546.82, 218,345.13 and 66,667.80

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Solution

The fourth proportional to 145,546.82, 218,345.13 and 66,667.80 is: 100,013.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,546.82 : 218,345.13 = 66,667.80 : x
  2. Step 2: Convert to fraction form
    145,546.82/218,345.13 = 66,667.80/x
  3. Step 3: Cross multiply
    145,546.82x = 218,345.13 × 66,667.80
  4. Step 4: Simplify right side
    145,546.82x = 14,556,589,457.81
  5. Step 5: Solve for x
    x = 14,556,589,457.81/145,546.82
  6. Step 6: Final answer
    x = 100,013.11

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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.