Finding the Fourth Proportional to 81,395,712,129.80, 122,093,568,194.70 and 68,335,018,113.80
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Solution
The fourth proportional to 81,395,712,129.80, 122,093,568,194.70 and 68,335,018,113.80 is: 102,502,527,170.70
Step by Step Solution
- Step 1: Write the proportion equation
81,395,712,129.80 : 122,093,568,194.70 = 68,335,018,113.80 : x - Step 2: Convert to fraction form
81,395,712,129.80/122,093,568,194.70 = 68,335,018,113.80/x - Step 3: Cross multiply
81,395,712,129.80x = 122,093,568,194.70 × 68,335,018,113.80 - Step 4: Simplify right side
81,395,712,129.80x = 8,343,266,194,163,299,778,560 - Step 5: Solve for x
x = 8,343,266,194,163,299,778,560/81,395,712,129.80 - Step 6: Final answer
x = 102,502,527,170.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.