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Finding the Fourth Proportional to 135,455.60, 203,280.60 and 76,228.40

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Solution

The fourth proportional to 135,455.60, 203,280.60 and 76,228.40 is: 114,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,455.60 : 203,280.60 = 76,228.40 : x
  2. Step 2: Convert to fraction form
    135,455.60/203,280.60 = 76,228.40/x
  3. Step 3: Cross multiply
    135,455.60x = 203,280.60 × 76,228.40
  4. Step 4: Simplify right side
    135,455.60x = 15,495,754,889.04
  5. Step 5: Solve for x
    x = 15,495,754,889.04/135,455.60
  6. Step 6: Final answer
    x = 114,397.30

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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.