Home / 112,837.65-155,778.35-100,872.33

Finding the Fourth Proportional to 112,837.65, 155,778.35 and 100,872.33

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Solution

The fourth proportional to 112,837.65, 155,778.35 and 100,872.33 is: 139,259.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,837.65 : 155,778.35 = 100,872.33 : x
  2. Step 2: Convert to fraction form
    112,837.65/155,778.35 = 100,872.33/x
  3. Step 3: Cross multiply
    112,837.65x = 155,778.35 × 100,872.33
  4. Step 4: Simplify right side
    112,837.65x = 15,713,725,128.06
  5. Step 5: Solve for x
    x = 15,713,725,128.06/112,837.65
  6. Step 6: Final answer
    x = 139,259.59

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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.