Finding the Fourth Proportional to 128,831,001.80, 193,246,502.70 and 77,812,665.80
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Solution
The fourth proportional to 128,831,001.80, 193,246,502.70 and 77,812,665.80 is: 116,718,998.70
Step by Step Solution
- Step 1: Write the proportion equation
128,831,001.80 : 193,246,502.70 = 77,812,665.80 : x - Step 2: Convert to fraction form
128,831,001.80/193,246,502.70 = 77,812,665.80/x - Step 3: Cross multiply
128,831,001.80x = 193,246,502.70 × 77,812,665.80 - Step 4: Simplify right side
128,831,001.80x = 15,037,025,531,613,896 - Step 5: Solve for x
x = 15,037,025,531,613,896/128,831,001.80 - Step 6: Final answer
x = 116,718,998.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.