Finding the Fourth Proportional to 158,564.79, 218,817.55 and 86,944.19
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Solution
The fourth proportional to 158,564.79, 218,817.55 and 86,944.19 is: 119,981.96
Step by Step Solution
- Step 1: Write the proportion equation
158,564.79 : 218,817.55 = 86,944.19 : x - Step 2: Convert to fraction form
158,564.79/218,817.55 = 86,944.19/x - Step 3: Cross multiply
158,564.79x = 218,817.55 × 86,944.19 - Step 4: Simplify right side
158,564.79x = 19,024,913,657.13 - Step 5: Solve for x
x = 19,024,913,657.13/158,564.79 - Step 6: Final answer
x = 119,981.96
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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.