Finding the Fourth Proportional to 156,005,647.25, 215,287,598.99 and 86,390,944.07
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Solution
The fourth proportional to 156,005,647.25, 215,287,598.99 and 86,390,944.07 is: 119,219,395.26
Step by Step Solution
- Step 1: Write the proportion equation
156,005,647.25 : 215,287,598.99 = 86,390,944.07 : x - Step 2: Convert to fraction form
156,005,647.25/215,287,598.99 = 86,390,944.07/x - Step 3: Cross multiply
156,005,647.25x = 215,287,598.99 × 86,390,944.07 - Step 4: Simplify right side
156,005,647.25x = 18,598,898,922,449,216 - Step 5: Solve for x
x = 18,598,898,922,449,216/156,005,647.25 - Step 6: Final answer
x = 119,219,395.26
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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.