Home / 138,913.44-208,352.88-45,411.36

Finding the Fourth Proportional to 138,913.44, 208,352.88 and 45,411.36

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Solution

The fourth proportional to 138,913.44, 208,352.88 and 45,411.36 is: 68,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,913.44 : 208,352.88 = 45,411.36 : x
  2. Step 2: Convert to fraction form
    138,913.44/208,352.88 = 45,411.36/x
  3. Step 3: Cross multiply
    138,913.44x = 208,352.88 × 45,411.36
  4. Step 4: Simplify right side
    138,913.44x = 9,461,587,640.72
  5. Step 5: Solve for x
    x = 9,461,587,640.72/138,913.44
  6. Step 6: Final answer
    x = 68,111.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.