Finding the Fourth Proportional to 130,395,976.44, 179,947,514.70 and 81,531,730.68
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Solution
The fourth proportional to 130,395,976.44, 179,947,514.70 and 81,531,730.68 is: 112,514,455.63
Step by Step Solution
- Step 1: Write the proportion equation
130,395,976.44 : 179,947,514.70 = 81,531,730.68 : x - Step 2: Convert to fraction form
130,395,976.44/179,947,514.70 = 81,531,730.68/x - Step 3: Cross multiply
130,395,976.44x = 179,947,514.70 × 81,531,730.68 - Step 4: Simplify right side
130,395,976.44x = 14,671,432,305,055,742 - Step 5: Solve for x
x = 14,671,432,305,055,742/130,395,976.44 - Step 6: Final answer
x = 112,514,455.63
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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.