Finding the Fourth Proportional to 137,159.19, 189,272.07 and 76,718.18
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Solution
The fourth proportional to 137,159.19, 189,272.07 and 76,718.18 is: 105,866.82
Step by Step Solution
- Step 1: Write the proportion equation
137,159.19 : 189,272.07 = 76,718.18 : x - Step 2: Convert to fraction form
137,159.19/189,272.07 = 76,718.18/x - Step 3: Cross multiply
137,159.19x = 189,272.07 × 76,718.18 - Step 4: Simplify right side
137,159.19x = 14,520,607,788.87 - Step 5: Solve for x
x = 14,520,607,788.87/137,159.19 - Step 6: Final answer
x = 105,866.82
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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.