Finding the Fourth Proportional to 156,830,817.20, 235,246,225.80 and 99,576,906.80
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Solution
The fourth proportional to 156,830,817.20, 235,246,225.80 and 99,576,906.80 is: 149,365,360.20
Step by Step Solution
- Step 1: Write the proportion equation
156,830,817.20 : 235,246,225.80 = 99,576,906.80 : x - Step 2: Convert to fraction form
156,830,817.20/235,246,225.80 = 99,576,906.80/x - Step 3: Cross multiply
156,830,817.20x = 235,246,225.80 × 99,576,906.80 - Step 4: Simplify right side
156,830,817.20x = 23,425,091,501,538,356 - Step 5: Solve for x
x = 23,425,091,501,538,356/156,830,817.20 - Step 6: Final answer
x = 149,365,360.20
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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.