Finding the Fourth Proportional to 212,720,402.79, 293,576,724.59 and 124,688,363.67
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Solution
The fourth proportional to 212,720,402.79, 293,576,724.59 and 124,688,363.67 is: 172,083,170.77
Step by Step Solution
- Step 1: Write the proportion equation
212,720,402.79 : 293,576,724.59 = 124,688,363.67 : x - Step 2: Convert to fraction form
212,720,402.79/293,576,724.59 = 124,688,363.67/x - Step 3: Cross multiply
212,720,402.79x = 293,576,724.59 × 124,688,363.67 - Step 4: Simplify right side
212,720,402.79x = 36,605,601,400,101,904 - Step 5: Solve for x
x = 36,605,601,400,101,904/212,720,402.79 - Step 6: Final answer
x = 172,083,170.77
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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.