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Finding the Fourth Proportional to 154,034.40, 230,878.80 and 79,125.60

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Solution

The fourth proportional to 154,034.40, 230,878.80 and 79,125.60 is: 118,599.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,034.40 : 230,878.80 = 79,125.60 : x
  2. Step 2: Convert to fraction form
    154,034.40/230,878.80 = 79,125.60/x
  3. Step 3: Cross multiply
    154,034.40x = 230,878.80 × 79,125.60
  4. Step 4: Simplify right side
    154,034.40x = 18,268,423,577.28
  5. Step 5: Solve for x
    x = 18,268,423,577.28/154,034.40
  6. Step 6: Final answer
    x = 118,599.63

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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.