Home / 143,148.21-214,655.66-53,128.23

Finding the Fourth Proportional to 143,148.21, 214,655.66 and 53,128.23

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Solution

The fourth proportional to 143,148.21, 214,655.66 and 53,128.23 is: 79,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,148.21 : 214,655.66 = 53,128.23 : x
  2. Step 2: Convert to fraction form
    143,148.21/214,655.66 = 53,128.23/x
  3. Step 3: Cross multiply
    143,148.21x = 214,655.66 × 53,128.23
  4. Step 4: Simplify right side
    143,148.21x = 11,404,275,009.64
  5. Step 5: Solve for x
    x = 11,404,275,009.64/143,148.21
  6. Step 6: Final answer
    x = 79,667.60

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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.