Finding the Fourth Proportional to 128,435,329.89, 177,240,871.17 and 69,697,995.62
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Solution
The fourth proportional to 128,435,329.89, 177,240,871.17 and 69,697,995.62 is: 96,183,296.86
Step by Step Solution
- Step 1: Write the proportion equation
128,435,329.89 : 177,240,871.17 = 69,697,995.62 : x - Step 2: Convert to fraction form
128,435,329.89/177,240,871.17 = 69,697,995.62/x - Step 3: Cross multiply
128,435,329.89x = 177,240,871.17 × 69,697,995.62 - Step 4: Simplify right side
128,435,329.89x = 12,353,333,461,605,438 - Step 5: Solve for x
x = 12,353,333,461,605,438/128,435,329.89 - Step 6: Final answer
x = 96,183,296.86
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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.