Finding the Fourth Proportional to 137,484.21, 189,727.95 and 77,054.84
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Solution
The fourth proportional to 137,484.21, 189,727.95 and 77,054.84 is: 106,335.53
Step by Step Solution
- Step 1: Write the proportion equation
137,484.21 : 189,727.95 = 77,054.84 : x - Step 2: Convert to fraction form
137,484.21/189,727.95 = 77,054.84/x - Step 3: Cross multiply
137,484.21x = 189,727.95 × 77,054.84 - Step 4: Simplify right side
137,484.21x = 14,619,456,830.78 - Step 5: Solve for x
x = 14,619,456,830.78/137,484.21 - Step 6: Final answer
x = 106,335.53
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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.