Finding the Fourth Proportional to 137,258,646.86, 189,416,246.70 and 74,534,186.28
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Solution
The fourth proportional to 137,258,646.86, 189,416,246.70 and 74,534,186.28 is: 102,856,804.57
Step by Step Solution
- Step 1: Write the proportion equation
137,258,646.86 : 189,416,246.70 = 74,534,186.28 : x - Step 2: Convert to fraction form
137,258,646.86/189,416,246.70 = 74,534,186.28/x - Step 3: Cross multiply
137,258,646.86x = 189,416,246.70 × 74,534,186.28 - Step 4: Simplify right side
137,258,646.86x = 14,117,985,815,996,234 - Step 5: Solve for x
x = 14,117,985,815,996,234/137,258,646.86 - Step 6: Final answer
x = 102,856,804.57
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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.