Home / 128,864.16-177,796.08-83,544

Finding the Fourth Proportional to 128,864.16, 177,796.08 and 83,544

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Solution

The fourth proportional to 128,864.16, 177,796.08 and 83,544 is: 115,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,864.16 : 177,796.08 = 83,544 : x
  2. Step 2: Convert to fraction form
    128,864.16/177,796.08 = 83,544/x
  3. Step 3: Cross multiply
    128,864.16x = 177,796.08 × 83,544
  4. Step 4: Simplify right side
    128,864.16x = 14,853,795,707.52
  5. Step 5: Solve for x
    x = 14,853,795,707.52/128,864.16
  6. Step 6: Final answer
    x = 115,267.08

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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.