Home / 137,913.41-190,339.68-77,488.72

Finding the Fourth Proportional to 137,913.41, 190,339.68 and 77,488.72

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Solution

The fourth proportional to 137,913.41, 190,339.68 and 77,488.72 is: 106,945.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,913.41 : 190,339.68 = 77,488.72 : x
  2. Step 2: Convert to fraction form
    137,913.41/190,339.68 = 77,488.72/x
  3. Step 3: Cross multiply
    137,913.41x = 190,339.68 × 77,488.72
  4. Step 4: Simplify right side
    137,913.41x = 14,749,178,696.92
  5. Step 5: Solve for x
    x = 14,749,178,696.92/137,913.41
  6. Step 6: Final answer
    x = 106,945.21

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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.