Finding the Fourth Proportional to 153,761,110.74, 212,190,195.74 and 86,794,164.62
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Solution
The fourth proportional to 153,761,110.74, 212,190,195.74 and 86,794,164.62 is: 119,775,869.80
Step by Step Solution
- Step 1: Write the proportion equation
153,761,110.74 : 212,190,195.74 = 86,794,164.62 : x - Step 2: Convert to fraction form
153,761,110.74/212,190,195.74 = 86,794,164.62/x - Step 3: Cross multiply
153,761,110.74x = 212,190,195.74 × 86,794,164.62 - Step 4: Simplify right side
153,761,110.74x = 18,416,870,779,807,584 - Step 5: Solve for x
x = 18,416,870,779,807,584/153,761,110.74 - Step 6: Final answer
x = 119,775,869.80
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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.