Home / 111,788.60-154,190.10-75,916.28

Finding the Fourth Proportional to 111,788.60, 154,190.10 and 75,916.28

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Solution

The fourth proportional to 111,788.60, 154,190.10 and 75,916.28 is: 104,711.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,788.60 : 154,190.10 = 75,916.28 : x
  2. Step 2: Convert to fraction form
    111,788.60/154,190.10 = 75,916.28/x
  3. Step 3: Cross multiply
    111,788.60x = 154,190.10 × 75,916.28
  4. Step 4: Simplify right side
    111,788.60x = 11,705,538,804.83
  5. Step 5: Solve for x
    x = 11,705,538,804.83/111,788.60
  6. Step 6: Final answer
    x = 104,711.38

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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.