Finding the Fourth Proportional to 143,787,619.80, 215,681,429.70 and 109,775,395.80
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Solution
The fourth proportional to 143,787,619.80, 215,681,429.70 and 109,775,395.80 is: 164,663,093.70
Step by Step Solution
- Step 1: Write the proportion equation
143,787,619.80 : 215,681,429.70 = 109,775,395.80 : x - Step 2: Convert to fraction form
143,787,619.80/215,681,429.70 = 109,775,395.80/x - Step 3: Cross multiply
143,787,619.80x = 215,681,429.70 × 109,775,395.80 - Step 4: Simplify right side
143,787,619.80x = 23,676,514,312,027,372 - Step 5: Solve for x
x = 23,676,514,312,027,372/143,787,619.80 - Step 6: Final answer
x = 164,663,093.70
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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.