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Finding the Fourth Proportional to 93,809.40, 140,742.90 and 74,095.80

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Solution

The fourth proportional to 93,809.40, 140,742.90 and 74,095.80 is: 111,166.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,809.40 : 140,742.90 = 74,095.80 : x
  2. Step 2: Convert to fraction form
    93,809.40/140,742.90 = 74,095.80/x
  3. Step 3: Cross multiply
    93,809.40x = 140,742.90 × 74,095.80
  4. Step 4: Simplify right side
    93,809.40x = 10,428,457,769.82
  5. Step 5: Solve for x
    x = 10,428,457,769.82/93,809.40
  6. Step 6: Final answer
    x = 111,166.45

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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.