Home / 120,927,442.80-181,391,164.20-66,318,927.60

Finding the Fourth Proportional to 120,927,442.80, 181,391,164.20 and 66,318,927.60

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Solution

The fourth proportional to 120,927,442.80, 181,391,164.20 and 66,318,927.60 is: 99,478,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,927,442.80 : 181,391,164.20 = 66,318,927.60 : x
  2. Step 2: Convert to fraction form
    120,927,442.80/181,391,164.20 = 66,318,927.60/x
  3. Step 3: Cross multiply
    120,927,442.80x = 181,391,164.20 × 66,318,927.60
  4. Step 4: Simplify right side
    120,927,442.80x = 12,029,667,485,859,512
  5. Step 5: Solve for x
    x = 12,029,667,485,859,512/120,927,442.80
  6. Step 6: Final answer
    x = 99,478,391.40

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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.