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Finding the Fourth Proportional to 175,990, 242,975.96 and 122,256.88

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Solution

The fourth proportional to 175,990, 242,975.96 and 122,256.88 is: 168,790.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,990 : 242,975.96 = 122,256.88 : x
  2. Step 2: Convert to fraction form
    175,990/242,975.96 = 122,256.88/x
  3. Step 3: Cross multiply
    175,990x = 242,975.96 × 122,256.88
  4. Step 4: Simplify right side
    175,990x = 29,705,482,784.60
  5. Step 5: Solve for x
    x = 29,705,482,784.60/175,990
  6. Step 6: Final answer
    x = 168,790.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.