Finding the Fourth Proportional to 139,538,733.09, 192,563,454.24 and 77,673,686.28
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Solution
The fourth proportional to 139,538,733.09, 192,563,454.24 and 77,673,686.28 is: 107,189,688.50
Step by Step Solution
- Step 1: Write the proportion equation
139,538,733.09 : 192,563,454.24 = 77,673,686.28 : x - Step 2: Convert to fraction form
139,538,733.09/192,563,454.24 = 77,673,686.28/x - Step 3: Cross multiply
139,538,733.09x = 192,563,454.24 × 77,673,686.28 - Step 4: Simplify right side
139,538,733.09x = 14,957,113,333,630,896 - Step 5: Solve for x
x = 14,957,113,333,630,896/139,538,733.09 - Step 6: Final answer
x = 107,189,688.50
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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.