Home / 139,968,137.05-209,952,205.58-103,688,431.45

Finding the Fourth Proportional to 139,968,137.05, 209,952,205.58 and 103,688,431.45

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Solution

The fourth proportional to 139,968,137.05, 209,952,205.58 and 103,688,431.45 is: 155,532,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,137.05 : 209,952,205.58 = 103,688,431.45 : x
  2. Step 2: Convert to fraction form
    139,968,137.05/209,952,205.58 = 103,688,431.45/x
  3. Step 3: Cross multiply
    139,968,137.05x = 209,952,205.58 × 103,688,431.45
  4. Step 4: Simplify right side
    139,968,137.05x = 21,769,614,876,058,140
  5. Step 5: Solve for x
    x = 21,769,614,876,058,140/139,968,137.05
  6. Step 6: Final answer
    x = 155,532,647.18

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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.