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Finding the Fourth Proportional to 103,425.30, 155,137.95 and 92,271.60

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Solution

The fourth proportional to 103,425.30, 155,137.95 and 92,271.60 is: 138,407.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,425.30 : 155,137.95 = 92,271.60 : x
  2. Step 2: Convert to fraction form
    103,425.30/155,137.95 = 92,271.60/x
  3. Step 3: Cross multiply
    103,425.30x = 155,137.95 × 92,271.60
  4. Step 4: Simplify right side
    103,425.30x = 14,314,826,867.22
  5. Step 5: Solve for x
    x = 14,314,826,867.22/103,425.30
  6. Step 6: Final answer
    x = 138,407.40

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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.