Home / 138,054.41-190,530.77-76,806.66

Finding the Fourth Proportional to 138,054.41, 190,530.77 and 76,806.66

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Solution

The fourth proportional to 138,054.41, 190,530.77 and 76,806.66 is: 106,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,054.41 : 190,530.77 = 76,806.66 : x
  2. Step 2: Convert to fraction form
    138,054.41/190,530.77 = 76,806.66/x
  3. Step 3: Cross multiply
    138,054.41x = 190,530.77 × 76,806.66
  4. Step 4: Simplify right side
    138,054.41x = 14,634,031,686.89
  5. Step 5: Solve for x
    x = 14,634,031,686.89/138,054.41
  6. Step 6: Final answer
    x = 106,001.92

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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.