Home / 137,708.73-190,045.31-77,276.25

Finding the Fourth Proportional to 137,708.73, 190,045.31 and 77,276.25

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Solution

The fourth proportional to 137,708.73, 190,045.31 and 77,276.25 is: 106,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,708.73 : 190,045.31 = 77,276.25 : x
  2. Step 2: Convert to fraction form
    137,708.73/190,045.31 = 77,276.25/x
  3. Step 3: Cross multiply
    137,708.73x = 190,045.31 × 77,276.25
  4. Step 4: Simplify right side
    137,708.73x = 14,685,988,500.51
  5. Step 5: Solve for x
    x = 14,685,988,500.51/137,708.73
  6. Step 6: Final answer
    x = 106,645.30

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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.