Home / 165,883.36-228,846.78-105,421.60

Finding the Fourth Proportional to 165,883.36, 228,846.78 and 105,421.60

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Solution

The fourth proportional to 165,883.36, 228,846.78 and 105,421.60 is: 145,435.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,883.36 : 228,846.78 = 105,421.60 : x
  2. Step 2: Convert to fraction form
    165,883.36/228,846.78 = 105,421.60/x
  3. Step 3: Cross multiply
    165,883.36x = 228,846.78 × 105,421.60
  4. Step 4: Simplify right side
    165,883.36x = 24,125,393,702.45
  5. Step 5: Solve for x
    x = 24,125,393,702.45/165,883.36
  6. Step 6: Final answer
    x = 145,435.89

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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.