Home / 112,128.29-154,739.58-63,722.58

Finding the Fourth Proportional to 112,128.29, 154,739.58 and 63,722.58

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Solution

The fourth proportional to 112,128.29, 154,739.58 and 63,722.58 is: 87,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,128.29 : 154,739.58 = 63,722.58 : x
  2. Step 2: Convert to fraction form
    112,128.29/154,739.58 = 63,722.58/x
  3. Step 3: Cross multiply
    112,128.29x = 154,739.58 × 63,722.58
  4. Step 4: Simplify right side
    112,128.29x = 9,860,405,265.72
  5. Step 5: Solve for x
    x = 9,860,405,265.72/112,128.29
  6. Step 6: Final answer
    x = 87,938.61

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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.