Home / 206,012,693.81-309,019,151.69-76,603,488.90

Finding the Fourth Proportional to 206,012,693.81, 309,019,151.69 and 76,603,488.90

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Solution

The fourth proportional to 206,012,693.81, 309,019,151.69 and 76,603,488.90 is: 114,905,274.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,012,693.81 : 309,019,151.69 = 76,603,488.90 : x
  2. Step 2: Convert to fraction form
    206,012,693.81/309,019,151.69 = 76,603,488.90/x
  3. Step 3: Cross multiply
    206,012,693.81x = 309,019,151.69 × 76,603,488.90
  4. Step 4: Simplify right side
    206,012,693.81x = 23,671,945,155,989,316
  5. Step 5: Solve for x
    x = 23,671,945,155,989,316/206,012,693.81
  6. Step 6: Final answer
    x = 114,905,274.62

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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.