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Finding the Fourth Proportional to 169,808.40, 254,561.94 and 85,458.24

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Solution

The fourth proportional to 169,808.40, 254,561.94 and 85,458.24 is: 128,111.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,808.40 : 254,561.94 = 85,458.24 : x
  2. Step 2: Convert to fraction form
    169,808.40/254,561.94 = 85,458.24/x
  3. Step 3: Cross multiply
    169,808.40x = 254,561.94 × 85,458.24
  4. Step 4: Simplify right side
    169,808.40x = 21,754,415,363.39
  5. Step 5: Solve for x
    x = 21,754,415,363.39/169,808.40
  6. Step 6: Final answer
    x = 128,111.54

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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.