Finding the Fourth Proportional to 138,260,963.55, 190,800,206.25 and 74,681,302.41
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Solution
The fourth proportional to 138,260,963.55, 190,800,206.25 and 74,681,302.41 is: 103,060,238.68
Step by Step Solution
- Step 1: Write the proportion equation
138,260,963.55 : 190,800,206.25 = 74,681,302.41 : x - Step 2: Convert to fraction form
138,260,963.55/190,800,206.25 = 74,681,302.41/x - Step 3: Cross multiply
138,260,963.55x = 190,800,206.25 × 74,681,302.41 - Step 4: Simplify right side
138,260,963.55x = 14,249,207,902,566,566 - Step 5: Solve for x
x = 14,249,207,902,566,566/138,260,963.55 - Step 6: Final answer
x = 103,060,238.68
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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.