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Finding the Fourth Proportional to 130,438.40, 195,657.60 and 121,625.60

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Solution

The fourth proportional to 130,438.40, 195,657.60 and 121,625.60 is: 182,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,438.40 : 195,657.60 = 121,625.60 : x
  2. Step 2: Convert to fraction form
    130,438.40/195,657.60 = 121,625.60/x
  3. Step 3: Cross multiply
    130,438.40x = 195,657.60 × 121,625.60
  4. Step 4: Simplify right side
    130,438.40x = 23,796,972,994.56
  5. Step 5: Solve for x
    x = 23,796,972,994.56/130,438.40
  6. Step 6: Final answer
    x = 182,438.40

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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.