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Finding the Fourth Proportional to 165,483, 228,371.40 and 90,036.36

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Solution

The fourth proportional to 165,483, 228,371.40 and 90,036.36 is: 124,252.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,483 : 228,371.40 = 90,036.36 : x
  2. Step 2: Convert to fraction form
    165,483/228,371.40 = 90,036.36/x
  3. Step 3: Cross multiply
    165,483x = 228,371.40 × 90,036.36
  4. Step 4: Simplify right side
    165,483x = 20,561,729,584.10
  5. Step 5: Solve for x
    x = 20,561,729,584.10/165,483
  6. Step 6: Final answer
    x = 124,252.82

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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.