Home / 128,888.88-178,186.32-127,707.36

Finding the Fourth Proportional to 128,888.88, 178,186.32 and 127,707.36

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Solution

The fourth proportional to 128,888.88, 178,186.32 and 127,707.36 is: 176,552.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,888.88 : 178,186.32 = 127,707.36 : x
  2. Step 2: Convert to fraction form
    128,888.88/178,186.32 = 127,707.36/x
  3. Step 3: Cross multiply
    128,888.88x = 178,186.32 × 127,707.36
  4. Step 4: Simplify right side
    128,888.88x = 22,755,704,515.32
  5. Step 5: Solve for x
    x = 22,755,704,515.32/128,888.88
  6. Step 6: Final answer
    x = 176,552.89

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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.