Finding the Fourth Proportional to 129,936.68, 179,312.64 and 70,320.68
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Solution
The fourth proportional to 129,936.68, 179,312.64 and 70,320.68 is: 97,042.55
Step by Step Solution
- Step 1: Write the proportion equation
129,936.68 : 179,312.64 = 70,320.68 : x - Step 2: Convert to fraction form
129,936.68/179,312.64 = 70,320.68/x - Step 3: Cross multiply
129,936.68x = 179,312.64 × 70,320.68 - Step 4: Simplify right side
129,936.68x = 12,609,386,777.40 - Step 5: Solve for x
x = 12,609,386,777.40/129,936.68 - Step 6: Final answer
x = 97,042.55
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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.