Home / 111,400.60-153,742.55-61,109.32

Finding the Fourth Proportional to 111,400.60, 153,742.55 and 61,109.32

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Solution

The fourth proportional to 111,400.60, 153,742.55 and 61,109.32 is: 84,336.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,400.60 : 153,742.55 = 61,109.32 : x
  2. Step 2: Convert to fraction form
    111,400.60/153,742.55 = 61,109.32/x
  3. Step 3: Cross multiply
    111,400.60x = 153,742.55 × 61,109.32
  4. Step 4: Simplify right side
    111,400.60x = 9,395,102,685.57
  5. Step 5: Solve for x
    x = 9,395,102,685.57/111,400.60
  6. Step 6: Final answer
    x = 84,336.19

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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.