Finding the Fourth Proportional to 101,361,900.78, 139,994,896.68 and 68,710,165.74
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Solution
The fourth proportional to 101,361,900.78, 139,994,896.68 and 68,710,165.74 is: 94,898,304.78
Step by Step Solution
- Step 1: Write the proportion equation
101,361,900.78 : 139,994,896.68 = 68,710,165.74 : x - Step 2: Convert to fraction form
101,361,900.78/139,994,896.68 = 68,710,165.74/x - Step 3: Cross multiply
101,361,900.78x = 139,994,896.68 × 68,710,165.74 - Step 4: Simplify right side
101,361,900.78x = 9,619,072,553,636,976 - Step 5: Solve for x
x = 9,619,072,553,636,976/101,361,900.78 - Step 6: Final answer
x = 94,898,304.78
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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.