Finding the Fourth Proportional to 115,372,415.34, 159,188,479.58 and 68,306,118.20
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Solution
The fourth proportional to 115,372,415.34, 159,188,479.58 and 68,306,118.20 is: 94,247,373.35
Step by Step Solution
- Step 1: Write the proportion equation
115,372,415.34 : 159,188,479.58 = 68,306,118.20 : x - Step 2: Convert to fraction form
115,372,415.34/159,188,479.58 = 68,306,118.20/x - Step 3: Cross multiply
115,372,415.34x = 159,188,479.58 × 68,306,118.20 - Step 4: Simplify right side
115,372,415.34x = 10,873,547,102,269,768 - Step 5: Solve for x
x = 10,873,547,102,269,768/115,372,415.34 - Step 6: Final answer
x = 94,247,373.35
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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.