Finding the Fourth Proportional to 136,972.08, 189,031.19 and 83,246.67
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Solution
The fourth proportional to 136,972.08, 189,031.19 and 83,246.67 is: 114,886.31
Step by Step Solution
- Step 1: Write the proportion equation
136,972.08 : 189,031.19 = 83,246.67 : x - Step 2: Convert to fraction form
136,972.08/189,031.19 = 83,246.67/x - Step 3: Cross multiply
136,972.08x = 189,031.19 × 83,246.67 - Step 4: Simplify right side
136,972.08x = 15,736,216,677.40 - Step 5: Solve for x
x = 15,736,216,677.40/136,972.08 - Step 6: Final answer
x = 114,886.31
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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.