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Finding the Fourth Proportional to 136,489.60, 204,734.40 and 125,430.40

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Solution

The fourth proportional to 136,489.60, 204,734.40 and 125,430.40 is: 188,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,489.60 : 204,734.40 = 125,430.40 : x
  2. Step 2: Convert to fraction form
    136,489.60/204,734.40 = 125,430.40/x
  3. Step 3: Cross multiply
    136,489.60x = 204,734.40 × 125,430.40
  4. Step 4: Simplify right side
    136,489.60x = 25,679,917,685.76
  5. Step 5: Solve for x
    x = 25,679,917,685.76/136,489.60
  6. Step 6: Final answer
    x = 188,145.60

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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.