Home / 165,928.36-228,985.86-90,481

Finding the Fourth Proportional to 165,928.36, 228,985.86 and 90,481

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Solution

The fourth proportional to 165,928.36, 228,985.86 and 90,481 is: 124,866.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,928.36 : 228,985.86 = 90,481 : x
  2. Step 2: Convert to fraction form
    165,928.36/228,985.86 = 90,481/x
  3. Step 3: Cross multiply
    165,928.36x = 228,985.86 × 90,481
  4. Step 4: Simplify right side
    165,928.36x = 20,718,869,598.66
  5. Step 5: Solve for x
    x = 20,718,869,598.66/165,928.36
  6. Step 6: Final answer
    x = 124,866.36

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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.