Finding the Fourth Proportional to 139,175.06, 192,041.16 and 77,918.08
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Solution
The fourth proportional to 139,175.06, 192,041.16 and 77,918.08 is: 107,515.52
Step by Step Solution
- Step 1: Write the proportion equation
139,175.06 : 192,041.16 = 77,918.08 : x - Step 2: Convert to fraction form
139,175.06/192,041.16 = 77,918.08/x - Step 3: Cross multiply
139,175.06x = 192,041.16 × 77,918.08 - Step 4: Simplify right side
139,175.06x = 14,963,478,468.17 - Step 5: Solve for x
x = 14,963,478,468.17/139,175.06 - Step 6: Final answer
x = 107,515.52
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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.