Finding the Fourth Proportional to 153,232,938.19, 211,465,920.77 and 83,622,803.05
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Solution
The fourth proportional to 153,232,938.19, 211,465,920.77 and 83,622,803.05 is: 115,401,905.45
Step by Step Solution
- Step 1: Write the proportion equation
153,232,938.19 : 211,465,920.77 = 83,622,803.05 : x - Step 2: Convert to fraction form
153,232,938.19/211,465,920.77 = 83,622,803.05/x - Step 3: Cross multiply
153,232,938.19x = 211,465,920.77 × 83,622,803.05 - Step 4: Simplify right side
153,232,938.19x = 17,683,373,044,336,614 - Step 5: Solve for x
x = 17,683,373,044,336,614/153,232,938.19 - Step 6: Final answer
x = 115,401,905.45
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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.