Finding the Fourth Proportional to 160,243,871.63, 221,136,542.82 and 86,905,013.63
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Solution
The fourth proportional to 160,243,871.63, 221,136,542.82 and 86,905,013.63 is: 119,928,918.79
Step by Step Solution
- Step 1: Write the proportion equation
160,243,871.63 : 221,136,542.82 = 86,905,013.63 : x - Step 2: Convert to fraction form
160,243,871.63/221,136,542.82 = 86,905,013.63/x - Step 3: Cross multiply
160,243,871.63x = 221,136,542.82 × 86,905,013.63 - Step 4: Simplify right side
160,243,871.63x = 19,217,874,266,757,496 - Step 5: Solve for x
x = 19,217,874,266,757,496/160,243,871.63 - Step 6: Final answer
x = 119,928,918.79
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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.