Finding the Fourth Proportional to 84,169,899.10, 126,254,848.65 and 81,650,475.10
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Solution
The fourth proportional to 84,169,899.10, 126,254,848.65 and 81,650,475.10 is: 122,475,712.65
Step by Step Solution
- Step 1: Write the proportion equation
84,169,899.10 : 126,254,848.65 = 81,650,475.10 : x - Step 2: Convert to fraction form
84,169,899.10/126,254,848.65 = 81,650,475.10/x - Step 3: Cross multiply
84,169,899.10x = 126,254,848.65 × 81,650,475.10 - Step 4: Simplify right side
84,169,899.10x = 10,308,768,375,951,094 - Step 5: Solve for x
x = 10,308,768,375,951,094/84,169,899.10 - Step 6: Final answer
x = 122,475,712.65
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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.