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Finding the Fourth Proportional to 91,809.60, 137,908.80 and 88,504.80

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Solution

The fourth proportional to 91,809.60, 137,908.80 and 88,504.80 is: 132,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,809.60 : 137,908.80 = 88,504.80 : x
  2. Step 2: Convert to fraction form
    91,809.60/137,908.80 = 88,504.80/x
  3. Step 3: Cross multiply
    91,809.60x = 137,908.80 × 88,504.80
  4. Step 4: Simplify right side
    91,809.60x = 12,205,590,762.24
  5. Step 5: Solve for x
    x = 12,205,590,762.24/91,809.60
  6. Step 6: Final answer
    x = 132,944.60

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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.