Finding the Fourth Proportional to 139,564,048.16, 192,594,099.12 and 77,682,795.68
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Solution
The fourth proportional to 139,564,048.16, 192,594,099.12 and 77,682,795.68 is: 107,199,871.66
Step by Step Solution
- Step 1: Write the proportion equation
139,564,048.16 : 192,594,099.12 = 77,682,795.68 : x - Step 2: Convert to fraction form
139,564,048.16/192,594,099.12 = 77,682,795.68/x - Step 3: Cross multiply
139,564,048.16x = 192,594,099.12 × 77,682,795.68 - Step 4: Simplify right side
139,564,048.16x = 14,961,248,051,112,630 - Step 5: Solve for x
x = 14,961,248,051,112,630/139,564,048.16 - Step 6: Final answer
x = 107,199,871.66
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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.