Finding the Fourth Proportional to 137,011.49, 189,079.84 and 74,925.63
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Solution
The fourth proportional to 137,011.49, 189,079.84 and 74,925.63 is: 103,399.55
Step by Step Solution
- Step 1: Write the proportion equation
137,011.49 : 189,079.84 = 74,925.63 : x - Step 2: Convert to fraction form
137,011.49/189,079.84 = 74,925.63/x - Step 3: Cross multiply
137,011.49x = 189,079.84 × 74,925.63 - Step 4: Simplify right side
137,011.49x = 14,166,926,296.20 - Step 5: Solve for x
x = 14,166,926,296.20/137,011.49 - Step 6: Final answer
x = 103,399.55
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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.