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Finding the Fourth Proportional to 161,696.80, 223,158 and 90,088.48

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Solution

The fourth proportional to 161,696.80, 223,158 and 90,088.48 is: 124,331.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,696.80 : 223,158 = 90,088.48 : x
  2. Step 2: Convert to fraction form
    161,696.80/223,158 = 90,088.48/x
  3. Step 3: Cross multiply
    161,696.80x = 223,158 × 90,088.48
  4. Step 4: Simplify right side
    161,696.80x = 20,103,965,019.84
  5. Step 5: Solve for x
    x = 20,103,965,019.84/161,696.80
  6. Step 6: Final answer
    x = 124,331.25

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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.