Home / 165,783.10-228,780.60-90,331.60

Finding the Fourth Proportional to 165,783.10, 228,780.60 and 90,331.60

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Solution

The fourth proportional to 165,783.10, 228,780.60 and 90,331.60 is: 124,657.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,783.10 : 228,780.60 = 90,331.60 : x
  2. Step 2: Convert to fraction form
    165,783.10/228,780.60 = 90,331.60/x
  3. Step 3: Cross multiply
    165,783.10x = 228,780.60 × 90,331.60
  4. Step 4: Simplify right side
    165,783.10x = 20,666,117,646.96
  5. Step 5: Solve for x
    x = 20,666,117,646.96/165,783.10
  6. Step 6: Final answer
    x = 124,657.57

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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.