Home / 138,071.39-190,544.00-77,641.74

Finding the Fourth Proportional to 138,071.39, 190,544.00 and 77,641.74

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Solution

The fourth proportional to 138,071.39, 190,544.00 and 77,641.74 is: 107,148.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,071.39 : 190,544.00 = 77,641.74 : x
  2. Step 2: Convert to fraction form
    138,071.39/190,544.00 = 77,641.74/x
  3. Step 3: Cross multiply
    138,071.39x = 190,544.00 × 77,641.74
  4. Step 4: Simplify right side
    138,071.39x = 14,794,167,318.35
  5. Step 5: Solve for x
    x = 14,794,167,318.35/138,071.39
  6. Step 6: Final answer
    x = 107,148.68

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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.