Home / 128,617.82-177,421.08-101,293.25

Finding the Fourth Proportional to 128,617.82, 177,421.08 and 101,293.25

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Solution

The fourth proportional to 128,617.82, 177,421.08 and 101,293.25 is: 139,728.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,617.82 : 177,421.08 = 101,293.25 : x
  2. Step 2: Convert to fraction form
    128,617.82/177,421.08 = 101,293.25/x
  3. Step 3: Cross multiply
    128,617.82x = 177,421.08 × 101,293.25
  4. Step 4: Simplify right side
    128,617.82x = 17,971,556,924.60
  5. Step 5: Solve for x
    x = 17,971,556,924.60/128,617.82
  6. Step 6: Final answer
    x = 139,728.36

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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.