Home / 137,748.76-190,078.66-77,326.05

Finding the Fourth Proportional to 137,748.76, 190,078.66 and 77,326.05

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Solution

The fourth proportional to 137,748.76, 190,078.66 and 77,326.05 is: 106,701.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,748.76 : 190,078.66 = 77,326.05 : x
  2. Step 2: Convert to fraction form
    137,748.76/190,078.66 = 77,326.05/x
  3. Step 3: Cross multiply
    137,748.76x = 190,078.66 × 77,326.05
  4. Step 4: Simplify right side
    137,748.76x = 14,698,031,967.09
  5. Step 5: Solve for x
    x = 14,698,031,967.09/137,748.76
  6. Step 6: Final answer
    x = 106,701.74

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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.