Finding the Fourth Proportional to 113,823,490.30, 170,723,745.12 and 77,170,720.75
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Solution
The fourth proportional to 113,823,490.30, 170,723,745.12 and 77,170,720.75 is: 115,748,290.84
Step by Step Solution
- Step 1: Write the proportion equation
113,823,490.30 : 170,723,745.12 = 77,170,720.75 : x - Step 2: Convert to fraction form
113,823,490.30/170,723,745.12 = 77,170,720.75/x - Step 3: Cross multiply
113,823,490.30x = 170,723,745.12 × 77,170,720.75 - Step 4: Simplify right side
113,823,490.30x = 13,174,874,460,049,696 - Step 5: Solve for x
x = 13,174,874,460,049,696/113,823,490.30 - Step 6: Final answer
x = 115,748,290.84
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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.