Finding the Fourth Proportional to 128,891,359.41, 177,873,925.35 and 79,360,307.74
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Solution
The fourth proportional to 128,891,359.41, 177,873,925.35 and 79,360,307.74 is: 109,519,594.79
Step by Step Solution
- Step 1: Write the proportion equation
128,891,359.41 : 177,873,925.35 = 79,360,307.74 : x - Step 2: Convert to fraction form
128,891,359.41/177,873,925.35 = 79,360,307.74/x - Step 3: Cross multiply
128,891,359.41x = 177,873,925.35 × 79,360,307.74 - Step 4: Simplify right side
128,891,359.41x = 14,116,129,454,697,786 - Step 5: Solve for x
x = 14,116,129,454,697,786/128,891,359.41 - Step 6: Final answer
x = 109,519,594.79
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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.