Finding the Fourth Proportional to 128,135,201.96, 176,842,114.80 and 72,382,973.24
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Solution
The fourth proportional to 128,135,201.96, 176,842,114.80 and 72,382,973.24 is: 99,897,279.34
Step by Step Solution
- Step 1: Write the proportion equation
128,135,201.96 : 176,842,114.80 = 72,382,973.24 : x - Step 2: Convert to fraction form
128,135,201.96/176,842,114.80 = 72,382,973.24/x - Step 3: Cross multiply
128,135,201.96x = 176,842,114.80 × 72,382,973.24 - Step 4: Simplify right side
128,135,201.96x = 12,800,358,063,273,408 - Step 5: Solve for x
x = 12,800,358,063,273,408/128,135,201.96 - Step 6: Final answer
x = 99,897,279.34
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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.