Home / 111,579.93-153,980.19-61,278.93

Finding the Fourth Proportional to 111,579.93, 153,980.19 and 61,278.93

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Solution

The fourth proportional to 111,579.93, 153,980.19 and 61,278.93 is: 84,564.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.93 : 153,980.19 = 61,278.93 : x
  2. Step 2: Convert to fraction form
    111,579.93/153,980.19 = 61,278.93/x
  3. Step 3: Cross multiply
    111,579.93x = 153,980.19 × 61,278.93
  4. Step 4: Simplify right side
    111,579.93x = 9,435,741,284.40
  5. Step 5: Solve for x
    x = 9,435,741,284.40/111,579.93
  6. Step 6: Final answer
    x = 84,564.86

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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.