Home / 142,665.75-213,998.13-42,825.54

Finding the Fourth Proportional to 142,665.75, 213,998.13 and 42,825.54

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Solution

The fourth proportional to 142,665.75, 213,998.13 and 42,825.54 is: 64,238.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,665.75 : 213,998.13 = 42,825.54 : x
  2. Step 2: Convert to fraction form
    142,665.75/213,998.13 = 42,825.54/x
  3. Step 3: Cross multiply
    142,665.75x = 213,998.13 × 42,825.54
  4. Step 4: Simplify right side
    142,665.75x = 9,164,585,476.24
  5. Step 5: Solve for x
    x = 9,164,585,476.24/142,665.75
  6. Step 6: Final answer
    x = 64,238.16

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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.