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Finding the Fourth Proportional to 93,321.60, 139,982.40 and 91,766.40

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Solution

The fourth proportional to 93,321.60, 139,982.40 and 91,766.40 is: 137,649.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,321.60 : 139,982.40 = 91,766.40 : x
  2. Step 2: Convert to fraction form
    93,321.60/139,982.40 = 91,766.40/x
  3. Step 3: Cross multiply
    93,321.60x = 139,982.40 × 91,766.40
  4. Step 4: Simplify right side
    93,321.60x = 12,845,680,911.36
  5. Step 5: Solve for x
    x = 12,845,680,911.36/93,321.60
  6. Step 6: Final answer
    x = 137,649.60

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Similar ratio
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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.