Finding the Fourth Proportional to 128,158,864.74, 176,860,082.57 and 69,421,529.84
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Solution
The fourth proportional to 128,158,864.74, 176,860,082.57 and 69,421,529.84 is: 95,802,171.18
Step by Step Solution
- Step 1: Write the proportion equation
128,158,864.74 : 176,860,082.57 = 69,421,529.84 : x - Step 2: Convert to fraction form
128,158,864.74/176,860,082.57 = 69,421,529.84/x - Step 3: Cross multiply
128,158,864.74x = 176,860,082.57 × 69,421,529.84 - Step 4: Simplify right side
128,158,864.74x = 12,277,897,498,406,710 - Step 5: Solve for x
x = 12,277,897,498,406,710/128,158,864.74 - Step 6: Final answer
x = 95,802,171.18
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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.