Home / 165,878.07-228,911.58-90,426.57

Finding the Fourth Proportional to 165,878.07, 228,911.58 and 90,426.57

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Solution

The fourth proportional to 165,878.07, 228,911.58 and 90,426.57 is: 124,788.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,878.07 : 228,911.58 = 90,426.57 : x
  2. Step 2: Convert to fraction form
    165,878.07/228,911.58 = 90,426.57/x
  3. Step 3: Cross multiply
    165,878.07x = 228,911.58 × 90,426.57
  4. Step 4: Simplify right side
    165,878.07x = 20,699,689,012.68
  5. Step 5: Solve for x
    x = 20,699,689,012.68/165,878.07
  6. Step 6: Final answer
    x = 124,788.58

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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.