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Finding the Fourth Proportional to 93,314.30, 139,971.45 and 69,986.30

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Solution

The fourth proportional to 93,314.30, 139,971.45 and 69,986.30 is: 104,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,314.30 : 139,971.45 = 69,986.30 : x
  2. Step 2: Convert to fraction form
    93,314.30/139,971.45 = 69,986.30/x
  3. Step 3: Cross multiply
    93,314.30x = 139,971.45 × 69,986.30
  4. Step 4: Simplify right side
    93,314.30x = 9,796,083,891.14
  5. Step 5: Solve for x
    x = 9,796,083,891.14/93,314.30
  6. Step 6: Final answer
    x = 104,979.45

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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.