Home / 139,435,136.80-209,160,578.40-42,394,010.20

Finding the Fourth Proportional to 139,435,136.80, 209,160,578.40 and 42,394,010.20

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Solution

The fourth proportional to 139,435,136.80, 209,160,578.40 and 42,394,010.20 is: 63,593,409.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,435,136.80 : 209,160,578.40 = 42,394,010.20 : x
  2. Step 2: Convert to fraction form
    139,435,136.80/209,160,578.40 = 42,394,010.20/x
  3. Step 3: Cross multiply
    139,435,136.80x = 209,160,578.40 × 42,394,010.20
  4. Step 4: Simplify right side
    139,435,136.80x = 8,867,155,694,127,501
  5. Step 5: Solve for x
    x = 8,867,155,694,127,501/139,435,136.80
  6. Step 6: Final answer
    x = 63,593,409.08

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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.