Home / 118,894.21-164,094.82-90,308.50

Finding the Fourth Proportional to 118,894.21, 164,094.82 and 90,308.50

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Solution

The fourth proportional to 118,894.21, 164,094.82 and 90,308.50 is: 124,641.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,894.21 : 164,094.82 = 90,308.50 : x
  2. Step 2: Convert to fraction form
    118,894.21/164,094.82 = 90,308.50/x
  3. Step 3: Cross multiply
    118,894.21x = 164,094.82 × 90,308.50
  4. Step 4: Simplify right side
    118,894.21x = 14,819,157,051.97
  5. Step 5: Solve for x
    x = 14,819,157,051.97/118,894.21
  6. Step 6: Final answer
    x = 124,641.54

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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.