Finding the Fourth Proportional to 153,912,369.91, 212,399,275.30 and 83,348,101.91
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Solution
The fourth proportional to 153,912,369.91, 212,399,275.30 and 83,348,101.91 is: 115,020,491.55
Step by Step Solution
- Step 1: Write the proportion equation
153,912,369.91 : 212,399,275.30 = 83,348,101.91 : x - Step 2: Convert to fraction form
153,912,369.91/212,399,275.30 = 83,348,101.91/x - Step 3: Cross multiply
153,912,369.91x = 212,399,275.30 × 83,348,101.91 - Step 4: Simplify right side
153,912,369.91x = 17,703,076,442,044,180 - Step 5: Solve for x
x = 17,703,076,442,044,180/153,912,369.91 - Step 6: Final answer
x = 115,020,491.55
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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.