Finding the Fourth Proportional to 153,364.05, 211,637.21 and 86,283.09
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Solution
The fourth proportional to 153,364.05, 211,637.21 and 86,283.09 is: 119,067.75
Step by Step Solution
- Step 1: Write the proportion equation
153,364.05 : 211,637.21 = 86,283.09 : x - Step 2: Convert to fraction form
153,364.05/211,637.21 = 86,283.09/x - Step 3: Cross multiply
153,364.05x = 211,637.21 × 86,283.09 - Step 4: Simplify right side
153,364.05x = 18,260,712,006.36 - Step 5: Solve for x
x = 18,260,712,006.36/153,364.05 - Step 6: Final answer
x = 119,067.75
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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.