Finding the Fourth Proportional to 103,117,217.76, 142,298,922.84 and 56,707,471.68
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Solution
The fourth proportional to 103,117,217.76, 142,298,922.84 and 56,707,471.68 is: 78,254,750.39
Step by Step Solution
- Step 1: Write the proportion equation
103,117,217.76 : 142,298,922.84 = 56,707,471.68 : x - Step 2: Convert to fraction form
103,117,217.76/142,298,922.84 = 56,707,471.68/x - Step 3: Cross multiply
103,117,217.76x = 142,298,922.84 × 56,707,471.68 - Step 4: Simplify right side
103,117,217.76x = 8,069,412,137,043,805 - Step 5: Solve for x
x = 8,069,412,137,043,805/103,117,217.76 - Step 6: Final answer
x = 78,254,750.39
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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.