Finding the Fourth Proportional to 153,587.63, 211,944.11 and 85,612.02
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Solution
The fourth proportional to 153,587.63, 211,944.11 and 85,612.02 is: 118,140.79
Step by Step Solution
- Step 1: Write the proportion equation
153,587.63 : 211,944.11 = 85,612.02 : x - Step 2: Convert to fraction form
153,587.63/211,944.11 = 85,612.02/x - Step 3: Cross multiply
153,587.63x = 211,944.11 × 85,612.02 - Step 4: Simplify right side
153,587.63x = 18,144,962,956.14 - Step 5: Solve for x
x = 18,144,962,956.14/153,587.63 - Step 6: Final answer
x = 118,140.79
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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.