Home / 111,371.09-153,807.93-85,608.23

Finding the Fourth Proportional to 111,371.09, 153,807.93 and 85,608.23

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Solution

The fourth proportional to 111,371.09, 153,807.93 and 85,608.23 is: 118,228.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,371.09 : 153,807.93 = 85,608.23 : x
  2. Step 2: Convert to fraction form
    111,371.09/153,807.93 = 85,608.23/x
  3. Step 3: Cross multiply
    111,371.09x = 153,807.93 × 85,608.23
  4. Step 4: Simplify right side
    111,371.09x = 13,167,223,878.22
  5. Step 5: Solve for x
    x = 13,167,223,878.22/111,371.09
  6. Step 6: Final answer
    x = 118,228.39

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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.