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Finding the Fourth Proportional to 119,118.36, 164,385.99 and 65,403.59

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Solution

The fourth proportional to 119,118.36, 164,385.99 and 65,403.59 is: 90,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,118.36 : 164,385.99 = 65,403.59 : x
  2. Step 2: Convert to fraction form
    119,118.36/164,385.99 = 65,403.59/x
  3. Step 3: Cross multiply
    119,118.36x = 164,385.99 × 65,403.59
  4. Step 4: Simplify right side
    119,118.36x = 10,751,433,625.32
  5. Step 5: Solve for x
    x = 10,751,433,625.32/119,118.36
  6. Step 6: Final answer
    x = 90,258.41

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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.