Finding the Fourth Proportional to 143,377.36, 197,871.84 and 86,018.84
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Solution
The fourth proportional to 143,377.36, 197,871.84 and 86,018.84 is: 118,712.65
Step by Step Solution
- Step 1: Write the proportion equation
143,377.36 : 197,871.84 = 86,018.84 : x - Step 2: Convert to fraction form
143,377.36/197,871.84 = 86,018.84/x - Step 3: Cross multiply
143,377.36x = 197,871.84 × 86,018.84 - Step 4: Simplify right side
143,377.36x = 17,020,706,145.47 - Step 5: Solve for x
x = 17,020,706,145.47/143,377.36 - Step 6: Final answer
x = 118,712.65
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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.