Finding the Fourth Proportional to 115,506,963.89, 159,407,430.79 and 65,253,753.09
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Solution
The fourth proportional to 115,506,963.89, 159,407,430.79 and 65,253,753.09 is: 90,054,597.40
Step by Step Solution
- Step 1: Write the proportion equation
115,506,963.89 : 159,407,430.79 = 65,253,753.09 : x - Step 2: Convert to fraction form
115,506,963.89/159,407,430.79 = 65,253,753.09/x - Step 3: Cross multiply
115,506,963.89x = 159,407,430.79 × 65,253,753.09 - Step 4: Simplify right side
115,506,963.89x = 10,401,933,129,481,924 - Step 5: Solve for x
x = 10,401,933,129,481,924/115,506,963.89 - Step 6: Final answer
x = 90,054,597.40
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1.5x scale
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.