Finding the Fourth Proportional to 100,178,372.84, 138,260,749.43 and 56,128,349.18
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Solution
The fourth proportional to 100,178,372.84, 138,260,749.43 and 56,128,349.18 is: 77,465,299.17
Step by Step Solution
- Step 1: Write the proportion equation
100,178,372.84 : 138,260,749.43 = 56,128,349.18 : x - Step 2: Convert to fraction form
100,178,372.84/138,260,749.43 = 56,128,349.18/x - Step 3: Cross multiply
100,178,372.84x = 138,260,749.43 × 56,128,349.18 - Step 4: Simplify right side
100,178,372.84x = 7,760,347,622,381,499 - Step 5: Solve for x
x = 7,760,347,622,381,499/100,178,372.84 - Step 6: Final answer
x = 77,465,299.17
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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.