Finding the Fourth Proportional to 153,658,456.98, 212,053,719.32 and 84,043,839.91
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Solution
The fourth proportional to 153,658,456.98, 212,053,719.32 and 84,043,839.91 is: 115,983,260.47
Step by Step Solution
- Step 1: Write the proportion equation
153,658,456.98 : 212,053,719.32 = 84,043,839.91 : x - Step 2: Convert to fraction form
153,658,456.98/212,053,719.32 = 84,043,839.91/x - Step 3: Cross multiply
153,658,456.98x = 212,053,719.32 × 84,043,839.91 - Step 4: Simplify right side
153,658,456.98x = 17,821,808,838,850,152 - Step 5: Solve for x
x = 17,821,808,838,850,152/153,658,456.98 - Step 6: Final answer
x = 115,983,260.47
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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.