Home / 138,730,379.20-208,032,583.20-52,440,107.20

Finding the Fourth Proportional to 138,730,379.20, 208,032,583.20 and 52,440,107.20

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Solution

The fourth proportional to 138,730,379.20, 208,032,583.20 and 52,440,107.20 is: 78,636,352.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,730,379.20 : 208,032,583.20 = 52,440,107.20 : x
  2. Step 2: Convert to fraction form
    138,730,379.20/208,032,583.20 = 52,440,107.20/x
  3. Step 3: Cross multiply
    138,730,379.20x = 208,032,583.20 × 52,440,107.20
  4. Step 4: Simplify right side
    138,730,379.20x = 10,909,250,964,100,920
  5. Step 5: Solve for x
    x = 10,909,250,964,100,920/138,730,379.20
  6. Step 6: Final answer
    x = 78,636,352.23

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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.