Home / 155,028,830.85-213,939,689.10-85,414,211.04

Finding the Fourth Proportional to 155,028,830.85, 213,939,689.10 and 85,414,211.04

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Solution

The fourth proportional to 155,028,830.85, 213,939,689.10 and 85,414,211.04 is: 117,871,557.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,028,830.85 : 213,939,689.10 = 85,414,211.04 : x
  2. Step 2: Convert to fraction form
    155,028,830.85/213,939,689.10 = 85,414,211.04/x
  3. Step 3: Cross multiply
    155,028,830.85x = 213,939,689.10 × 85,414,211.04
  4. Step 4: Simplify right side
    155,028,830.85x = 18,273,489,754,619,388
  5. Step 5: Solve for x
    x = 18,273,489,754,619,388/155,028,830.85
  6. Step 6: Final answer
    x = 117,871,557.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.