Home / 137,890.97-190,279.29-77,471.67

Finding the Fourth Proportional to 137,890.97, 190,279.29 and 77,471.67

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Solution

The fourth proportional to 137,890.97, 190,279.29 and 77,471.67 is: 106,905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,890.97 : 190,279.29 = 77,471.67 : x
  2. Step 2: Convert to fraction form
    137,890.97/190,279.29 = 77,471.67/x
  3. Step 3: Cross multiply
    137,890.97x = 190,279.29 × 77,471.67
  4. Step 4: Simplify right side
    137,890.97x = 14,741,254,362.71
  5. Step 5: Solve for x
    x = 14,741,254,362.71/137,890.97
  6. Step 6: Final answer
    x = 106,905.15

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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.