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Finding the Fourth Proportional to 122,435.20, 183,652.80 and 121,657.60

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Solution

The fourth proportional to 122,435.20, 183,652.80 and 121,657.60 is: 182,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,435.20 : 183,652.80 = 121,657.60 : x
  2. Step 2: Convert to fraction form
    122,435.20/183,652.80 = 121,657.60/x
  3. Step 3: Cross multiply
    122,435.20x = 183,652.80 × 121,657.60
  4. Step 4: Simplify right side
    122,435.20x = 22,342,758,881.28
  5. Step 5: Solve for x
    x = 22,342,758,881.28/122,435.20
  6. Step 6: Final answer
    x = 182,486.40

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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.