Finding the Fourth Proportional to 156,023.79, 215,312.17 and 84,403.63
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Solution
The fourth proportional to 156,023.79, 215,312.17 and 84,403.63 is: 116,476.65
Step by Step Solution
- Step 1: Write the proportion equation
156,023.79 : 215,312.17 = 84,403.63 : x - Step 2: Convert to fraction form
156,023.79/215,312.17 = 84,403.63/x - Step 3: Cross multiply
156,023.79x = 215,312.17 × 84,403.63 - Step 4: Simplify right side
156,023.79x = 18,173,128,731.18 - Step 5: Solve for x
x = 18,173,128,731.18/156,023.79 - Step 6: Final answer
x = 116,476.65
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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.