Finding the Fourth Proportional to 128,891,395.85, 177,873,975.61 and 79,360,344.18
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Solution
The fourth proportional to 128,891,395.85, 177,873,975.61 and 79,360,344.18 is: 109,519,645.06
Step by Step Solution
- Step 1: Write the proportion equation
128,891,395.85 : 177,873,975.61 = 79,360,344.18 : x - Step 2: Convert to fraction form
128,891,395.85/177,873,975.61 = 79,360,344.18/x - Step 3: Cross multiply
128,891,395.85x = 177,873,975.61 × 79,360,344.18 - Step 4: Simplify right side
128,891,395.85x = 14,116,139,924,876,124 - Step 5: Solve for x
x = 14,116,139,924,876,124/128,891,395.85 - Step 6: Final answer
x = 109,519,645.06
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.