Home / 142,431.75-213,648.09-53,661.42

Finding the Fourth Proportional to 142,431.75, 213,648.09 and 53,661.42

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Solution

The fourth proportional to 142,431.75, 213,648.09 and 53,661.42 is: 80,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,431.75 : 213,648.09 = 53,661.42 : x
  2. Step 2: Convert to fraction form
    142,431.75/213,648.09 = 53,661.42/x
  3. Step 3: Cross multiply
    142,431.75x = 213,648.09 × 53,661.42
  4. Step 4: Simplify right side
    142,431.75x = 11,464,659,889.69
  5. Step 5: Solve for x
    x = 11,464,659,889.69/142,431.75
  6. Step 6: Final answer
    x = 80,492.31

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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.