Finding the Fourth Proportional to 143,522,257.20, 215,283,385.80 and 135,963,985.20
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Solution
The fourth proportional to 143,522,257.20, 215,283,385.80 and 135,963,985.20 is: 203,945,977.80
Step by Step Solution
- Step 1: Write the proportion equation
143,522,257.20 : 215,283,385.80 = 135,963,985.20 : x - Step 2: Convert to fraction form
143,522,257.20/215,283,385.80 = 135,963,985.20/x - Step 3: Cross multiply
143,522,257.20x = 215,283,385.80 × 135,963,985.20 - Step 4: Simplify right side
143,522,257.20x = 29,270,787,080,717,088 - Step 5: Solve for x
x = 29,270,787,080,717,088/143,522,257.20 - Step 6: Final answer
x = 203,945,977.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.