Finding the Fourth Proportional to 129,572,007, 178,811,494.02 and 77,365,604.76
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Solution
The fourth proportional to 129,572,007, 178,811,494.02 and 77,365,604.76 is: 106,765,802.99
Step by Step Solution
- Step 1: Write the proportion equation
129,572,007 : 178,811,494.02 = 77,365,604.76 : x - Step 2: Convert to fraction form
129,572,007/178,811,494.02 = 77,365,604.76/x - Step 3: Cross multiply
129,572,007x = 178,811,494.02 × 77,365,604.76 - Step 4: Simplify right side
129,572,007x = 13,833,859,372,896,426 - Step 5: Solve for x
x = 13,833,859,372,896,426/129,572,007 - Step 6: Final answer
x = 106,765,802.99
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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.