Finding the Fourth Proportional to 138,742.08, 207,943.20 and 59,688.96
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Solution
The fourth proportional to 138,742.08, 207,943.20 and 59,688.96 is: 89,460.34
Step by Step Solution
- Step 1: Write the proportion equation
138,742.08 : 207,943.20 = 59,688.96 : x - Step 2: Convert to fraction form
138,742.08/207,943.20 = 59,688.96/x - Step 3: Cross multiply
138,742.08x = 207,943.20 × 59,688.96 - Step 4: Simplify right side
138,742.08x = 12,411,913,347.07 - Step 5: Solve for x
x = 12,411,913,347.07/138,742.08 - Step 6: Final answer
x = 89,460.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.