Finding the Fourth Proportional to 159,843,723.21, 220,584,335.40 and 86,504,865.21
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Solution
The fourth proportional to 159,843,723.21, 220,584,335.40 and 86,504,865.21 is: 119,376,712.57
Step by Step Solution
- Step 1: Write the proportion equation
159,843,723.21 : 220,584,335.40 = 86,504,865.21 : x - Step 2: Convert to fraction form
159,843,723.21/220,584,335.40 = 86,504,865.21/x - Step 3: Cross multiply
159,843,723.21x = 220,584,335.40 × 86,504,865.21 - Step 4: Simplify right side
159,843,723.21x = 19,081,618,201,214,432 - Step 5: Solve for x
x = 19,081,618,201,214,432/159,843,723.21 - Step 6: Final answer
x = 119,376,712.57
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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.