Finding the Fourth Proportional to 156,009,374.72, 215,299,704.68 and 86,394,755.60
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Solution
The fourth proportional to 156,009,374.72, 215,299,704.68 and 86,394,755.60 is: 119,228,510.47
Step by Step Solution
- Step 1: Write the proportion equation
156,009,374.72 : 215,299,704.68 = 86,394,755.60 : x - Step 2: Convert to fraction form
156,009,374.72/215,299,704.68 = 86,394,755.60/x - Step 3: Cross multiply
156,009,374.72x = 215,299,704.68 × 86,394,755.60 - Step 4: Simplify right side
156,009,374.72x = 18,600,765,367,414,072 - Step 5: Solve for x
x = 18,600,765,367,414,072/156,009,374.72 - Step 6: Final answer
x = 119,228,510.47
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.