Home / 236,140.47-325,864.35-128,708.28

Finding the Fourth Proportional to 236,140.47, 325,864.35 and 128,708.28

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Solution

The fourth proportional to 236,140.47, 325,864.35 and 128,708.28 is: 177,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,140.47 : 325,864.35 = 128,708.28 : x
  2. Step 2: Convert to fraction form
    236,140.47/325,864.35 = 128,708.28/x
  3. Step 3: Cross multiply
    236,140.47x = 325,864.35 × 128,708.28
  4. Step 4: Simplify right side
    236,140.47x = 41,941,440,001.82
  5. Step 5: Solve for x
    x = 41,941,440,001.82/236,140.47
  6. Step 6: Final answer
    x = 177,612.25

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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.