Home / 128,161.77-177,097.65-111,111.27

Finding the Fourth Proportional to 128,161.77, 177,097.65 and 111,111.27

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Solution

The fourth proportional to 128,161.77, 177,097.65 and 111,111.27 is: 153,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,161.77 : 177,097.65 = 111,111.27 : x
  2. Step 2: Convert to fraction form
    128,161.77/177,097.65 = 111,111.27/x
  3. Step 3: Cross multiply
    128,161.77x = 177,097.65 × 111,111.27
  4. Step 4: Simplify right side
    128,161.77x = 19,677,544,805.52
  5. Step 5: Solve for x
    x = 19,677,544,805.52/128,161.77
  6. Step 6: Final answer
    x = 153,536.77

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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.