Home / 165,489.78-228,376.89-90,038.82

Finding the Fourth Proportional to 165,489.78, 228,376.89 and 90,038.82

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Solution

The fourth proportional to 165,489.78, 228,376.89 and 90,038.82 is: 124,254.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,489.78 : 228,376.89 = 90,038.82 : x
  2. Step 2: Convert to fraction form
    165,489.78/228,376.89 = 90,038.82/x
  3. Step 3: Cross multiply
    165,489.78x = 228,376.89 × 90,038.82
  4. Step 4: Simplify right side
    165,489.78x = 20,562,785,690.87
  5. Step 5: Solve for x
    x = 20,562,785,690.87/165,489.78
  6. Step 6: Final answer
    x = 124,254.11

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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.