Home / 84,085.03-115,916.77-66,148.89

Finding the Fourth Proportional to 84,085.03, 115,916.77 and 66,148.89

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Solution

The fourth proportional to 84,085.03, 115,916.77 and 66,148.89 is: 91,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,085.03 : 115,916.77 = 66,148.89 : x
  2. Step 2: Convert to fraction form
    84,085.03/115,916.77 = 66,148.89/x
  3. Step 3: Cross multiply
    84,085.03x = 115,916.77 × 66,148.89
  4. Step 4: Simplify right side
    84,085.03x = 7,667,765,667.89
  5. Step 5: Solve for x
    x = 7,667,765,667.89/84,085.03
  6. Step 6: Final answer
    x = 91,190.62

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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.