Home / 102,712.80-154,112.40-55,999.20

Finding the Fourth Proportional to 102,712.80, 154,112.40 and 55,999.20

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Solution

The fourth proportional to 102,712.80, 154,112.40 and 55,999.20 is: 84,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,712.80 : 154,112.40 = 55,999.20 : x
  2. Step 2: Convert to fraction form
    102,712.80/154,112.40 = 55,999.20/x
  3. Step 3: Cross multiply
    102,712.80x = 154,112.40 × 55,999.20
  4. Step 4: Simplify right side
    102,712.80x = 8,630,171,110.08
  5. Step 5: Solve for x
    x = 8,630,171,110.08/102,712.80
  6. Step 6: Final answer
    x = 84,022.35

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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.