Finding the Fourth Proportional to 138,660,472.44, 191,349,114.12 and 76,779,482.40
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Solution
The fourth proportional to 138,660,472.44, 191,349,114.12 and 76,779,482.40 is: 105,954,391.19
Step by Step Solution
- Step 1: Write the proportion equation
138,660,472.44 : 191,349,114.12 = 76,779,482.40 : x - Step 2: Convert to fraction form
138,660,472.44/191,349,114.12 = 76,779,482.40/x - Step 3: Cross multiply
138,660,472.44x = 191,349,114.12 × 76,779,482.40 - Step 4: Simplify right side
138,660,472.44x = 14,691,685,939,832,132 - Step 5: Solve for x
x = 14,691,685,939,832,132/138,660,472.44 - Step 6: Final answer
x = 105,954,391.19
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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.