Finding the Fourth Proportional to 98,128,243,977.96, 135,528,679,114.98 and 65,957,754,006.76
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Solution
The fourth proportional to 98,128,243,977.96, 135,528,679,114.98 and 65,957,754,006.76 is: 91,096,782,287.62
Step by Step Solution
- Step 1: Write the proportion equation
98,128,243,977.96 : 135,528,679,114.98 = 65,957,754,006.76 : x - Step 2: Convert to fraction form
98,128,243,977.96/135,528,679,114.98 = 65,957,754,006.76/x - Step 3: Cross multiply
98,128,243,977.96x = 135,528,679,114.98 × 65,957,754,006.76 - Step 4: Simplify right side
98,128,243,977.96x = 8,939,167,277,926,962,954,240 - Step 5: Solve for x
x = 8,939,167,277,926,962,954,240/98,128,243,977.96 - Step 6: Final answer
x = 91,096,782,287.62
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1.5x scale
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.