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Finding the Fourth Proportional to 93,143.92, 139,722.36 and 30,858.16

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Solution

The fourth proportional to 93,143.92, 139,722.36 and 30,858.16 is: 46,289.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.92 : 139,722.36 = 30,858.16 : x
  2. Step 2: Convert to fraction form
    93,143.92/139,722.36 = 30,858.16/x
  3. Step 3: Cross multiply
    93,143.92x = 139,722.36 × 30,858.16
  4. Step 4: Simplify right side
    93,143.92x = 4,311,574,940.46
  5. Step 5: Solve for x
    x = 4,311,574,940.46/93,143.92
  6. Step 6: Final answer
    x = 46,289.39

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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.