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Finding the Fourth Proportional to 142,114.55, 213,059.43 and 53,358.21

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Solution

The fourth proportional to 142,114.55, 213,059.43 and 53,358.21 is: 79,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,114.55 : 213,059.43 = 53,358.21 : x
  2. Step 2: Convert to fraction form
    142,114.55/213,059.43 = 53,358.21/x
  3. Step 3: Cross multiply
    142,114.55x = 213,059.43 × 53,358.21
  4. Step 4: Simplify right side
    142,114.55x = 11,368,469,808.42
  5. Step 5: Solve for x
    x = 11,368,469,808.42/142,114.55
  6. Step 6: Final answer
    x = 79,995.12

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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.