Finding the Fourth Proportional to 153,543.60, 211,887.36 and 86,475.60
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Solution
The fourth proportional to 153,543.60, 211,887.36 and 86,475.60 is: 119,334.75
Step by Step Solution
- Step 1: Write the proportion equation
153,543.60 : 211,887.36 = 86,475.60 : x - Step 2: Convert to fraction form
153,543.60/211,887.36 = 86,475.60/x - Step 3: Cross multiply
153,543.60x = 211,887.36 × 86,475.60 - Step 4: Simplify right side
153,543.60x = 18,323,086,588.42 - Step 5: Solve for x
x = 18,323,086,588.42/153,543.60 - Step 6: Final answer
x = 119,334.75
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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.