Home / 137,900.12-190,301.03-77,469.49

Finding the Fourth Proportional to 137,900.12, 190,301.03 and 77,469.49

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Solution

The fourth proportional to 137,900.12, 190,301.03 and 77,469.49 is: 106,907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,900.12 : 190,301.03 = 77,469.49 : x
  2. Step 2: Convert to fraction form
    137,900.12/190,301.03 = 77,469.49/x
  3. Step 3: Cross multiply
    137,900.12x = 190,301.03 × 77,469.49
  4. Step 4: Simplify right side
    137,900.12x = 14,742,522,811.17
  5. Step 5: Solve for x
    x = 14,742,522,811.17/137,900.12
  6. Step 6: Final answer
    x = 106,907.26

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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.