Home / 236,369.17-326,189.05-128,939.20

Finding the Fourth Proportional to 236,369.17, 326,189.05 and 128,939.20

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Solution

The fourth proportional to 236,369.17, 326,189.05 and 128,939.20 is: 177,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,369.17 : 326,189.05 = 128,939.20 : x
  2. Step 2: Convert to fraction form
    236,369.17/326,189.05 = 128,939.20/x
  3. Step 3: Cross multiply
    236,369.17x = 326,189.05 × 128,939.20
  4. Step 4: Simplify right side
    236,369.17x = 42,058,554,017.94
  5. Step 5: Solve for x
    x = 42,058,554,017.94/236,369.17
  6. Step 6: Final answer
    x = 177,935.87

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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.