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Finding the Fourth Proportional to 93,620.40, 140,722.20 and 91,870.80

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Solution

The fourth proportional to 93,620.40, 140,722.20 and 91,870.80 is: 138,092.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,620.40 : 140,722.20 = 91,870.80 : x
  2. Step 2: Convert to fraction form
    93,620.40/140,722.20 = 91,870.80/x
  3. Step 3: Cross multiply
    93,620.40x = 140,722.20 × 91,870.80
  4. Step 4: Simplify right side
    93,620.40x = 12,928,261,091.76
  5. Step 5: Solve for x
    x = 12,928,261,091.76/93,620.40
  6. Step 6: Final answer
    x = 138,092.35

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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.