Home / 139,968,128.70-209,952,193.05-139,117,823.10

Finding the Fourth Proportional to 139,968,128.70, 209,952,193.05 and 139,117,823.10

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Solution

The fourth proportional to 139,968,128.70, 209,952,193.05 and 139,117,823.10 is: 208,676,734.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,128.70 : 209,952,193.05 = 139,117,823.10 : x
  2. Step 2: Convert to fraction form
    139,968,128.70/209,952,193.05 = 139,117,823.10/x
  3. Step 3: Cross multiply
    139,968,128.70x = 209,952,193.05 × 139,117,823.10
  4. Step 4: Simplify right side
    139,968,128.70x = 29,208,092,052,186,948
  5. Step 5: Solve for x
    x = 29,208,092,052,186,948/139,968,128.70
  6. Step 6: Final answer
    x = 208,676,734.65

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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.