Finding the Fourth Proportional to 212,720,765.82, 293,577,225.54 and 124,688,726.70
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Solution
The fourth proportional to 212,720,765.82, 293,577,225.54 and 124,688,726.70 is: 172,083,671.75
Step by Step Solution
- Step 1: Write the proportion equation
212,720,765.82 : 293,577,225.54 = 124,688,726.70 : x - Step 2: Convert to fraction form
212,720,765.82/293,577,225.54 = 124,688,726.70/x - Step 3: Cross multiply
212,720,765.82x = 293,577,225.54 × 124,688,726.70 - Step 4: Simplify right side
212,720,765.82x = 36,605,770,440,701,320 - Step 5: Solve for x
x = 36,605,770,440,701,320/212,720,765.82 - Step 6: Final answer
x = 172,083,671.75
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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.