Home / 93,669.66-139,836.80-90,388.38

Finding the Fourth Proportional to 93,669.66, 139,836.80 and 90,388.38

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Solution

The fourth proportional to 93,669.66, 139,836.80 and 90,388.38 is: 134,938.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,669.66 : 139,836.80 = 90,388.38 : x
  2. Step 2: Convert to fraction form
    93,669.66/139,836.80 = 90,388.38/x
  3. Step 3: Cross multiply
    93,669.66x = 139,836.80 × 90,388.38
  4. Step 4: Simplify right side
    93,669.66x = 12,639,621,816.38
  5. Step 5: Solve for x
    x = 12,639,621,816.38/93,669.66
  6. Step 6: Final answer
    x = 134,938.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.