Home / 126,870.16-190,339.80-43,776.40

Finding the Fourth Proportional to 126,870.16, 190,339.80 and 43,776.40

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Solution

The fourth proportional to 126,870.16, 190,339.80 and 43,776.40 is: 65,676.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,870.16 : 190,339.80 = 43,776.40 : x
  2. Step 2: Convert to fraction form
    126,870.16/190,339.80 = 43,776.40/x
  3. Step 3: Cross multiply
    126,870.16x = 190,339.80 × 43,776.40
  4. Step 4: Simplify right side
    126,870.16x = 8,332,391,220.72
  5. Step 5: Solve for x
    x = 8,332,391,220.72/126,870.16
  6. Step 6: Final answer
    x = 65,676.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.