Finding the Fourth Proportional to 138,738,886.10, 191,471,420.16 and 76,878,628.82
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Solution
The fourth proportional to 138,738,886.10, 191,471,420.16 and 76,878,628.82 is: 106,099,022.80
Step by Step Solution
- Step 1: Write the proportion equation
138,738,886.10 : 191,471,420.16 = 76,878,628.82 : x - Step 2: Convert to fraction form
138,738,886.10/191,471,420.16 = 76,878,628.82/x - Step 3: Cross multiply
138,738,886.10x = 191,471,420.16 × 76,878,628.82 - Step 4: Simplify right side
138,738,886.10x = 14,720,060,240,118,904 - Step 5: Solve for x
x = 14,720,060,240,118,904/138,738,886.10 - Step 6: Final answer
x = 106,099,022.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.