Finding the Fourth Proportional to 128,435,341.14, 177,240,886.70 and 69,698,006.87
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Solution
The fourth proportional to 128,435,341.14, 177,240,886.70 and 69,698,006.87 is: 96,183,312.38
Step by Step Solution
- Step 1: Write the proportion equation
128,435,341.14 : 177,240,886.70 = 69,698,006.87 : x - Step 2: Convert to fraction form
128,435,341.14/177,240,886.70 = 69,698,006.87/x - Step 3: Cross multiply
128,435,341.14x = 177,240,886.70 × 69,698,006.87 - Step 4: Simplify right side
128,435,341.14x = 12,353,336,537,626,796 - Step 5: Solve for x
x = 12,353,336,537,626,796/128,435,341.14 - Step 6: Final answer
x = 96,183,312.38
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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.