Finding the Fourth Proportional to 118,209,838.60, 163,184,867.30 and 68,640,556.92
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Solution
The fourth proportional to 118,209,838.60, 163,184,867.30 and 68,640,556.92 is: 94,756,073.65
Step by Step Solution
- Step 1: Write the proportion equation
118,209,838.60 : 163,184,867.30 = 68,640,556.92 : x - Step 2: Convert to fraction form
118,209,838.60/163,184,867.30 = 68,640,556.92/x - Step 3: Cross multiply
118,209,838.60x = 163,184,867.30 × 68,640,556.92 - Step 4: Simplify right side
118,209,838.60x = 11,201,100,172,388,298 - Step 5: Solve for x
x = 11,201,100,172,388,298/118,209,838.60 - Step 6: Final answer
x = 94,756,073.65
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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.