Finding the Fourth Proportional to 128,398,674.99, 177,191,176.16 and 75,461,169.99
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Solution
The fourth proportional to 128,398,674.99, 177,191,176.16 and 75,461,169.99 is: 104,137,005.04
Step by Step Solution
- Step 1: Write the proportion equation
128,398,674.99 : 177,191,176.16 = 75,461,169.99 : x - Step 2: Convert to fraction form
128,398,674.99/177,191,176.16 = 75,461,169.99/x - Step 3: Cross multiply
128,398,674.99x = 177,191,176.16 × 75,461,169.99 - Step 4: Simplify right side
128,398,674.99x = 13,371,053,464,560,488 - Step 5: Solve for x
x = 13,371,053,464,560,488/128,398,674.99 - Step 6: Final answer
x = 104,137,005.04
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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.