Finding the Fourth Proportional to 142,788.36, 197,053.02 and 86,188.68
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Solution
The fourth proportional to 142,788.36, 197,053.02 and 86,188.68 is: 118,943.45
Step by Step Solution
- Step 1: Write the proportion equation
142,788.36 : 197,053.02 = 86,188.68 : x - Step 2: Convert to fraction form
142,788.36/197,053.02 = 86,188.68/x - Step 3: Cross multiply
142,788.36x = 197,053.02 × 86,188.68 - Step 4: Simplify right side
142,788.36x = 16,983,739,683.81 - Step 5: Solve for x
x = 16,983,739,683.81/142,788.36 - Step 6: Final answer
x = 118,943.45
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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.