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Finding the Fourth Proportional to 93,963, 129,729.42 and 83,874.18

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Solution

The fourth proportional to 93,963, 129,729.42 and 83,874.18 is: 115,800.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,963 : 129,729.42 = 83,874.18 : x
  2. Step 2: Convert to fraction form
    93,963/129,729.42 = 83,874.18/x
  3. Step 3: Cross multiply
    93,963x = 129,729.42 × 83,874.18
  4. Step 4: Simplify right side
    93,963x = 10,880,948,724.38
  5. Step 5: Solve for x
    x = 10,880,948,724.38/93,963
  6. Step 6: Final answer
    x = 115,800.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.