Home / 144,128.26-198,915.35-83,686.87

Finding the Fourth Proportional to 144,128.26, 198,915.35 and 83,686.87

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Solution

The fourth proportional to 144,128.26, 198,915.35 and 83,686.87 is: 115,498.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,128.26 : 198,915.35 = 83,686.87 : x
  2. Step 2: Convert to fraction form
    144,128.26/198,915.35 = 83,686.87/x
  3. Step 3: Cross multiply
    144,128.26x = 198,915.35 × 83,686.87
  4. Step 4: Simplify right side
    144,128.26x = 16,646,603,036.45
  5. Step 5: Solve for x
    x = 16,646,603,036.45/144,128.26
  6. Step 6: Final answer
    x = 115,498.54

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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.