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Finding the Fourth Proportional to 102,893.30, 154,339.95 and 91,739.60

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Solution

The fourth proportional to 102,893.30, 154,339.95 and 91,739.60 is: 137,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,893.30 : 154,339.95 = 91,739.60 : x
  2. Step 2: Convert to fraction form
    102,893.30/154,339.95 = 91,739.60/x
  3. Step 3: Cross multiply
    102,893.30x = 154,339.95 × 91,739.60
  4. Step 4: Simplify right side
    102,893.30x = 14,159,085,277.02
  5. Step 5: Solve for x
    x = 14,159,085,277.02/102,893.30
  6. Step 6: Final answer
    x = 137,609.40

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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.