Finding the Fourth Proportional to 138,659,210.60, 207,932,828.70 and 47,735,997.80
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Solution
The fourth proportional to 138,659,210.60, 207,932,828.70 and 47,735,997.80 is: 71,584,722.07
Step by Step Solution
- Step 1: Write the proportion equation
138,659,210.60 : 207,932,828.70 = 47,735,997.80 : x - Step 2: Convert to fraction form
138,659,210.60/207,932,828.70 = 47,735,997.80/x - Step 3: Cross multiply
138,659,210.60x = 207,932,828.70 × 47,735,997.80 - Step 4: Simplify right side
138,659,210.60x = 9,925,881,053,370,976 - Step 5: Solve for x
x = 9,925,881,053,370,976/138,659,210.60 - Step 6: Final answer
x = 71,584,722.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.