Finding the Fourth Proportional to 159,717,844.72, 220,410,772.68 and 86,378,986.72
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Solution
The fourth proportional to 159,717,844.72, 220,410,772.68 and 86,378,986.72 is: 119,203,081.16
Step by Step Solution
- Step 1: Write the proportion equation
159,717,844.72 : 220,410,772.68 = 86,378,986.72 : x - Step 2: Convert to fraction form
159,717,844.72/220,410,772.68 = 86,378,986.72/x - Step 3: Cross multiply
159,717,844.72x = 220,410,772.68 × 86,378,986.72 - Step 4: Simplify right side
159,717,844.72x = 19,038,859,206,270,660 - Step 5: Solve for x
x = 19,038,859,206,270,660/159,717,844.72 - Step 6: Final answer
x = 119,203,081.16
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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.