Finding the Fourth Proportional to 103,457,813.79, 142,718,353.02 and 64,284,707.19
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Solution
The fourth proportional to 103,457,813.79, 142,718,353.02 and 64,284,707.19 is: 88,679,696.57
Step by Step Solution
- Step 1: Write the proportion equation
103,457,813.79 : 142,718,353.02 = 64,284,707.19 : x - Step 2: Convert to fraction form
103,457,813.79/142,718,353.02 = 64,284,707.19/x - Step 3: Cross multiply
103,457,813.79x = 142,718,353.02 × 64,284,707.19 - Step 4: Simplify right side
103,457,813.79x = 9,174,607,534,529,752 - Step 5: Solve for x
x = 9,174,607,534,529,752/103,457,813.79 - Step 6: Final answer
x = 88,679,696.57
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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.