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Finding the Fourth Proportional to 113,038.62, 155,934.42 and 67,071.60

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Solution

The fourth proportional to 113,038.62, 155,934.42 and 67,071.60 is: 92,523.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,038.62 : 155,934.42 = 67,071.60 : x
  2. Step 2: Convert to fraction form
    113,038.62/155,934.42 = 67,071.60/x
  3. Step 3: Cross multiply
    113,038.62x = 155,934.42 × 67,071.60
  4. Step 4: Simplify right side
    113,038.62x = 10,458,771,044.47
  5. Step 5: Solve for x
    x = 10,458,771,044.47/113,038.62
  6. Step 6: Final answer
    x = 92,523.87

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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.