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Finding the Fourth Proportional to 135,313.60, 202,970.40 and 128,862.40

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Solution

The fourth proportional to 135,313.60, 202,970.40 and 128,862.40 is: 193,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,313.60 : 202,970.40 = 128,862.40 : x
  2. Step 2: Convert to fraction form
    135,313.60/202,970.40 = 128,862.40/x
  3. Step 3: Cross multiply
    135,313.60x = 202,970.40 × 128,862.40
  4. Step 4: Simplify right side
    135,313.60x = 26,155,252,872.96
  5. Step 5: Solve for x
    x = 26,155,252,872.96/135,313.60
  6. Step 6: Final answer
    x = 193,293.60

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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.