Finding the Fourth Proportional to 106,711.36, 147,292.35 and 70,439.28
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Solution
The fourth proportional to 106,711.36, 147,292.35 and 70,439.28 is: 97,226.45
Step by Step Solution
- Step 1: Write the proportion equation
106,711.36 : 147,292.35 = 70,439.28 : x - Step 2: Convert to fraction form
106,711.36/147,292.35 = 70,439.28/x - Step 3: Cross multiply
106,711.36x = 147,292.35 × 70,439.28 - Step 4: Simplify right side
106,711.36x = 10,375,166,813.35 - Step 5: Solve for x
x = 10,375,166,813.35/106,711.36 - Step 6: Final answer
x = 97,226.45
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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.