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Finding the Fourth Proportional to 93,139.20, 139,708.80 and 33,976.80

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Solution

The fourth proportional to 93,139.20, 139,708.80 and 33,976.80 is: 50,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,139.20 : 139,708.80 = 33,976.80 : x
  2. Step 2: Convert to fraction form
    93,139.20/139,708.80 = 33,976.80/x
  3. Step 3: Cross multiply
    93,139.20x = 139,708.80 × 33,976.80
  4. Step 4: Simplify right side
    93,139.20x = 4,746,857,955.84
  5. Step 5: Solve for x
    x = 4,746,857,955.84/93,139.20
  6. Step 6: Final answer
    x = 50,965.20

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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.