Finding the Fourth Proportional to 122,560,436.78, 169,128,312.54 and 66,804,630.49
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Solution
The fourth proportional to 122,560,436.78, 169,128,312.54 and 66,804,630.49 is: 92,187,615.52
Step by Step Solution
- Step 1: Write the proportion equation
122,560,436.78 : 169,128,312.54 = 66,804,630.49 : x - Step 2: Convert to fraction form
122,560,436.78/169,128,312.54 = 66,804,630.49/x - Step 3: Cross multiply
122,560,436.78x = 169,128,312.54 × 66,804,630.49 - Step 4: Simplify right side
122,560,436.78x = 11,298,554,423,786,292 - Step 5: Solve for x
x = 11,298,554,423,786,292/122,560,436.78 - Step 6: Final answer
x = 92,187,615.52
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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.