Finding the Fourth Proportional to 138,429,258.30, 207,643,887.45 and 115,922,403.90
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Solution
The fourth proportional to 138,429,258.30, 207,643,887.45 and 115,922,403.90 is: 173,883,605.85
Step by Step Solution
- Step 1: Write the proportion equation
138,429,258.30 : 207,643,887.45 = 115,922,403.90 : x - Step 2: Convert to fraction form
138,429,258.30/207,643,887.45 = 115,922,403.90/x - Step 3: Cross multiply
138,429,258.30x = 207,643,887.45 × 115,922,403.90 - Step 4: Simplify right side
138,429,258.30x = 24,070,578,588,345,040 - Step 5: Solve for x
x = 24,070,578,588,345,040/138,429,258.30 - Step 6: Final answer
x = 173,883,605.85
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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.