Finding the Fourth Proportional to 109,160,654.79, 163,243,641.87 and 81,513,986.79
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Solution
The fourth proportional to 109,160,654.79, 163,243,641.87 and 81,513,986.79 is: 121,899,599.20
Step by Step Solution
- Step 1: Write the proportion equation
109,160,654.79 : 163,243,641.87 = 81,513,986.79 : x - Step 2: Convert to fraction form
109,160,654.79/163,243,641.87 = 81,513,986.79/x - Step 3: Cross multiply
109,160,654.79x = 163,243,641.87 × 81,513,986.79 - Step 4: Simplify right side
109,160,654.79x = 13,306,640,066,942,672 - Step 5: Solve for x
x = 13,306,640,066,942,672/109,160,654.79 - Step 6: Final answer
x = 121,899,599.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.