Home / 139,391,999.80-209,087,999.70-124,779,340.60

Finding the Fourth Proportional to 139,391,999.80, 209,087,999.70 and 124,779,340.60

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Solution

The fourth proportional to 139,391,999.80, 209,087,999.70 and 124,779,340.60 is: 187,169,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,391,999.80 : 209,087,999.70 = 124,779,340.60 : x
  2. Step 2: Convert to fraction form
    139,391,999.80/209,087,999.70 = 124,779,340.60/x
  3. Step 3: Cross multiply
    139,391,999.80x = 209,087,999.70 × 124,779,340.60
  4. Step 4: Simplify right side
    139,391,999.80x = 26,089,862,729,938,996
  5. Step 5: Solve for x
    x = 26,089,862,729,938,996/139,391,999.80
  6. Step 6: Final answer
    x = 187,169,010.90

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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.