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Finding the Fourth Proportional to 91,903.60, 137,563.80 and 91,903.60

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Solution

The fourth proportional to 91,903.60, 137,563.80 and 91,903.60 is: 137,563.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,903.60 : 137,563.80 = 91,903.60 : x
  2. Step 2: Convert to fraction form
    91,903.60/137,563.80 = 91,903.60/x
  3. Step 3: Cross multiply
    91,903.60x = 137,563.80 × 91,903.60
  4. Step 4: Simplify right side
    91,903.60x = 12,642,608,449.68
  5. Step 5: Solve for x
    x = 12,642,608,449.68/91,903.60
  6. Step 6: Final answer
    x = 137,563.80

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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.