Finding the Fourth Proportional to 102,309,155.40, 141,249,201.30 and 66,579,642.12
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Solution
The fourth proportional to 102,309,155.40, 141,249,201.30 and 66,579,642.12 is: 91,920,622.70
Step by Step Solution
- Step 1: Write the proportion equation
102,309,155.40 : 141,249,201.30 = 66,579,642.12 : x - Step 2: Convert to fraction form
102,309,155.40/141,249,201.30 = 66,579,642.12/x - Step 3: Cross multiply
102,309,155.40x = 141,249,201.30 × 66,579,642.12 - Step 4: Simplify right side
102,309,155.40x = 9,404,321,272,289,840 - Step 5: Solve for x
x = 9,404,321,272,289,840/102,309,155.40 - Step 6: Final answer
x = 91,920,622.70
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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.