Finding the Fourth Proportional to 142,163,188.70, 196,181,437.10 and 79,439,802.08
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Solution
The fourth proportional to 142,163,188.70, 196,181,437.10 and 79,439,802.08 is: 109,624,823.95
Step by Step Solution
- Step 1: Write the proportion equation
142,163,188.70 : 196,181,437.10 = 79,439,802.08 : x - Step 2: Convert to fraction form
142,163,188.70/196,181,437.10 = 79,439,802.08/x - Step 3: Cross multiply
142,163,188.70x = 196,181,437.10 × 79,439,802.08 - Step 4: Simplify right side
142,163,188.70x = 15,584,614,534,211,662 - Step 5: Solve for x
x = 15,584,614,534,211,662/142,163,188.70 - Step 6: Final answer
x = 109,624,823.95
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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.