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Finding the Fourth Proportional to 93,143.70, 139,715.55 and 74,116.80

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Solution

The fourth proportional to 93,143.70, 139,715.55 and 74,116.80 is: 111,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.70 : 139,715.55 = 74,116.80 : x
  2. Step 2: Convert to fraction form
    93,143.70/139,715.55 = 74,116.80/x
  3. Step 3: Cross multiply
    93,143.70x = 139,715.55 × 74,116.80
  4. Step 4: Simplify right side
    93,143.70x = 10,355,269,476.24
  5. Step 5: Solve for x
    x = 10,355,269,476.24/93,143.70
  6. Step 6: Final answer
    x = 111,175.20

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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.