Home / 102,406.40-153,631.20-43,211.60

Finding the Fourth Proportional to 102,406.40, 153,631.20 and 43,211.60

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Solution

The fourth proportional to 102,406.40, 153,631.20 and 43,211.60 is: 64,826.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,406.40 : 153,631.20 = 43,211.60 : x
  2. Step 2: Convert to fraction form
    102,406.40/153,631.20 = 43,211.60/x
  3. Step 3: Cross multiply
    102,406.40x = 153,631.20 × 43,211.60
  4. Step 4: Simplify right side
    102,406.40x = 6,638,649,961.92
  5. Step 5: Solve for x
    x = 6,638,649,961.92/102,406.40
  6. Step 6: Final answer
    x = 64,826.51

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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.