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Finding the Fourth Proportional to 133,354.30, 200,140.80 and 128,980.30

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Solution

The fourth proportional to 133,354.30, 200,140.80 and 128,980.30 is: 193,576.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,354.30 : 200,140.80 = 128,980.30 : x
  2. Step 2: Convert to fraction form
    133,354.30/200,140.80 = 128,980.30/x
  3. Step 3: Cross multiply
    133,354.30x = 200,140.80 × 128,980.30
  4. Step 4: Simplify right side
    133,354.30x = 25,814,220,426.24
  5. Step 5: Solve for x
    x = 25,814,220,426.24/133,354.30
  6. Step 6: Final answer
    x = 193,576.21

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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.