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Finding the Fourth Proportional to 121,279,357.80, 181,919,036.70 and 44,586,516.60

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Solution

The fourth proportional to 121,279,357.80, 181,919,036.70 and 44,586,516.60 is: 66,879,774.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,279,357.80 : 181,919,036.70 = 44,586,516.60 : x
  2. Step 2: Convert to fraction form
    121,279,357.80/181,919,036.70 = 44,586,516.60/x
  3. Step 3: Cross multiply
    121,279,357.80x = 181,919,036.70 × 44,586,516.60
  4. Step 4: Simplify right side
    121,279,357.80x = 8,111,136,149,680,559
  5. Step 5: Solve for x
    x = 8,111,136,149,680,559/121,279,357.80
  6. Step 6: Final answer
    x = 66,879,774.90

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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.