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Finding the Fourth Proportional to 118,954.19, 178,374.78 and 69,049.59

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Solution

The fourth proportional to 118,954.19, 178,374.78 and 69,049.59 is: 103,541.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,954.19 : 178,374.78 = 69,049.59 : x
  2. Step 2: Convert to fraction form
    118,954.19/178,374.78 = 69,049.59/x
  3. Step 3: Cross multiply
    118,954.19x = 178,374.78 × 69,049.59
  4. Step 4: Simplify right side
    118,954.19x = 12,316,705,425.34
  5. Step 5: Solve for x
    x = 12,316,705,425.34/118,954.19
  6. Step 6: Final answer
    x = 103,541.59

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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.