Finding the Fourth Proportional to 156,398.73, 215,690.90 and 121,952.00
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Solution
The fourth proportional to 156,398.73, 215,690.90 and 121,952.00 is: 168,185.09
Step by Step Solution
- Step 1: Write the proportion equation
156,398.73 : 215,690.90 = 121,952.00 : x - Step 2: Convert to fraction form
156,398.73/215,690.90 = 121,952.00/x - Step 3: Cross multiply
156,398.73x = 215,690.90 × 121,952.00 - Step 4: Simplify right side
156,398.73x = 26,303,934,948.59 - Step 5: Solve for x
x = 26,303,934,948.59/156,398.73 - Step 6: Final answer
x = 168,185.09
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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.