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Finding the Fourth Proportional to 102,858.80, 154,288.20 and 98,922.20

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Solution

The fourth proportional to 102,858.80, 154,288.20 and 98,922.20 is: 148,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,858.80 : 154,288.20 = 98,922.20 : x
  2. Step 2: Convert to fraction form
    102,858.80/154,288.20 = 98,922.20/x
  3. Step 3: Cross multiply
    102,858.80x = 154,288.20 × 98,922.20
  4. Step 4: Simplify right side
    102,858.80x = 15,262,528,178.04
  5. Step 5: Solve for x
    x = 15,262,528,178.04/102,858.80
  6. Step 6: Final answer
    x = 148,383.30

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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.