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Finding the Fourth Proportional to 93,316.80, 139,975.20 and 76,695.60

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Solution

The fourth proportional to 93,316.80, 139,975.20 and 76,695.60 is: 115,043.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,316.80 : 139,975.20 = 76,695.60 : x
  2. Step 2: Convert to fraction form
    93,316.80/139,975.20 = 76,695.60/x
  3. Step 3: Cross multiply
    93,316.80x = 139,975.20 × 76,695.60
  4. Step 4: Simplify right side
    93,316.80x = 10,735,481,949.12
  5. Step 5: Solve for x
    x = 10,735,481,949.12/93,316.80
  6. Step 6: Final answer
    x = 115,043.40

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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.