Home / 139,722,368.20-209,583,552.30-138,765,774.40

Finding the Fourth Proportional to 139,722,368.20, 209,583,552.30 and 138,765,774.40

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Solution

The fourth proportional to 139,722,368.20, 209,583,552.30 and 138,765,774.40 is: 208,148,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,722,368.20 : 209,583,552.30 = 138,765,774.40 : x
  2. Step 2: Convert to fraction form
    139,722,368.20/209,583,552.30 = 138,765,774.40/x
  3. Step 3: Cross multiply
    139,722,368.20x = 209,583,552.30 × 138,765,774.40
  4. Step 4: Simplify right side
    139,722,368.20x = 29,083,023,936,412,404
  5. Step 5: Solve for x
    x = 29,083,023,936,412,404/139,722,368.20
  6. Step 6: Final answer
    x = 208,148,661.60

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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.