Finding the Fourth Proportional to 139,829,628.78, 192,976,379.91 and 77,117,995.08
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Solution
The fourth proportional to 139,829,628.78, 192,976,379.91 and 77,117,995.08 is: 106,429,171.32
Step by Step Solution
- Step 1: Write the proportion equation
139,829,628.78 : 192,976,379.91 = 77,117,995.08 : x - Step 2: Convert to fraction form
139,829,628.78/192,976,379.91 = 77,117,995.08/x - Step 3: Cross multiply
139,829,628.78x = 192,976,379.91 × 77,117,995.08 - Step 4: Simplify right side
139,829,628.78x = 14,881,951,516,455,590 - Step 5: Solve for x
x = 14,881,951,516,455,590/139,829,628.78 - Step 6: Final answer
x = 106,429,171.32
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.