Home / 137,818.20-190,208.79-77,392.98

Finding the Fourth Proportional to 137,818.20, 190,208.79 and 77,392.98

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Solution

The fourth proportional to 137,818.20, 190,208.79 and 77,392.98 is: 106,813.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,818.20 : 190,208.79 = 77,392.98 : x
  2. Step 2: Convert to fraction form
    137,818.20/190,208.79 = 77,392.98/x
  3. Step 3: Cross multiply
    137,818.20x = 190,208.79 × 77,392.98
  4. Step 4: Simplify right side
    137,818.20x = 14,720,825,080.29
  5. Step 5: Solve for x
    x = 14,720,825,080.29/137,818.20
  6. Step 6: Final answer
    x = 106,813.36

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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.