Finding the Fourth Proportional to 135,865,944.88, 187,493,137.68 and 77,128,097.20
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Solution
The fourth proportional to 135,865,944.88, 187,493,137.68 and 77,128,097.20 is: 106,435,714.70
Step by Step Solution
- Step 1: Write the proportion equation
135,865,944.88 : 187,493,137.68 = 77,128,097.20 : x - Step 2: Convert to fraction form
135,865,944.88/187,493,137.68 = 77,128,097.20/x - Step 3: Cross multiply
135,865,944.88x = 187,493,137.68 × 77,128,097.20 - Step 4: Simplify right side
135,865,944.88x = 14,460,988,947,316,024 - Step 5: Solve for x
x = 14,460,988,947,316,024/135,865,944.88 - Step 6: Final answer
x = 106,435,714.70
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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.