Finding the Fourth Proportional to 128,571,051.84, 177,429,353.76 and 69,834,864
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Solution
The fourth proportional to 128,571,051.84, 177,429,353.76 and 69,834,864 is: 96,372,819.64
Step by Step Solution
- Step 1: Write the proportion equation
128,571,051.84 : 177,429,353.76 = 69,834,864 : x - Step 2: Convert to fraction form
128,571,051.84/177,429,353.76 = 69,834,864/x - Step 3: Cross multiply
128,571,051.84x = 177,429,353.76 × 69,834,864 - Step 4: Simplify right side
128,571,051.84x = 12,390,754,789,437,488 - Step 5: Solve for x
x = 12,390,754,789,437,488/128,571,051.84 - Step 6: Final answer
x = 96,372,819.64
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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.