Home / 142,118.16-212,783.40-71,850.60

Finding the Fourth Proportional to 142,118.16, 212,783.40 and 71,850.60

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Solution

The fourth proportional to 142,118.16, 212,783.40 and 71,850.60 is: 107,576.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,118.16 : 212,783.40 = 71,850.60 : x
  2. Step 2: Convert to fraction form
    142,118.16/212,783.40 = 71,850.60/x
  3. Step 3: Cross multiply
    142,118.16x = 212,783.40 × 71,850.60
  4. Step 4: Simplify right side
    142,118.16x = 15,288,614,960.04
  5. Step 5: Solve for x
    x = 15,288,614,960.04/142,118.16
  6. Step 6: Final answer
    x = 107,576.79

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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.