Home / 137,430.14-189,640.76-76,987.97

Finding the Fourth Proportional to 137,430.14, 189,640.76 and 76,987.97

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Solution

The fourth proportional to 137,430.14, 189,640.76 and 76,987.97 is: 106,236.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,430.14 : 189,640.76 = 76,987.97 : x
  2. Step 2: Convert to fraction form
    137,430.14/189,640.76 = 76,987.97/x
  3. Step 3: Cross multiply
    137,430.14x = 189,640.76 × 76,987.97
  4. Step 4: Simplify right side
    137,430.14x = 14,600,055,808.51
  5. Step 5: Solve for x
    x = 14,600,055,808.51/137,430.14
  6. Step 6: Final answer
    x = 106,236.20

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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.