Home / 141,683.20-212,265.60-86,214.40

Finding the Fourth Proportional to 141,683.20, 212,265.60 and 86,214.40

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Solution

The fourth proportional to 141,683.20, 212,265.60 and 86,214.40 is: 129,163.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,683.20 : 212,265.60 = 86,214.40 : x
  2. Step 2: Convert to fraction form
    141,683.20/212,265.60 = 86,214.40/x
  3. Step 3: Cross multiply
    141,683.20x = 212,265.60 × 86,214.40
  4. Step 4: Simplify right side
    141,683.20x = 18,300,351,344.64
  5. Step 5: Solve for x
    x = 18,300,351,344.64/141,683.20
  6. Step 6: Final answer
    x = 129,163.88

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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.