Finding the Fourth Proportional to 97,994,447.20, 146,991,670.80 and 68,769,128.80
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Solution
The fourth proportional to 97,994,447.20, 146,991,670.80 and 68,769,128.80 is: 103,153,693.20
Step by Step Solution
- Step 1: Write the proportion equation
97,994,447.20 : 146,991,670.80 = 68,769,128.80 : x - Step 2: Convert to fraction form
97,994,447.20/146,991,670.80 = 68,769,128.80/x - Step 3: Cross multiply
97,994,447.20x = 146,991,670.80 × 68,769,128.80 - Step 4: Simplify right side
97,994,447.20x = 10,108,489,141,772,400 - Step 5: Solve for x
x = 10,108,489,141,772,400/97,994,447.20 - Step 6: Final answer
x = 103,153,693.20
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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.