Finding the Fourth Proportional to 139,888,529.66, 193,046,356.88 and 77,163,212.70
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Solution
The fourth proportional to 139,888,529.66, 193,046,356.88 and 77,163,212.70 is: 106,485,336.10
Step by Step Solution
- Step 1: Write the proportion equation
139,888,529.66 : 193,046,356.88 = 77,163,212.70 : x - Step 2: Convert to fraction form
139,888,529.66/193,046,356.88 = 77,163,212.70/x - Step 3: Cross multiply
139,888,529.66x = 193,046,356.88 × 77,163,212.70 - Step 4: Simplify right side
139,888,529.66x = 14,896,077,096,891,548 - Step 5: Solve for x
x = 14,896,077,096,891,548/139,888,529.66 - Step 6: Final answer
x = 106,485,336.10
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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.