Finding the Fourth Proportional to 139,378,290.36, 209,053,812.78 and 42,334,840.68
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Solution
The fourth proportional to 139,378,290.36, 209,053,812.78 and 42,334,840.68 is: 63,498,123.24
Step by Step Solution
- Step 1: Write the proportion equation
139,378,290.36 : 209,053,812.78 = 42,334,840.68 : x - Step 2: Convert to fraction form
139,378,290.36/209,053,812.78 = 42,334,840.68/x - Step 3: Cross multiply
139,378,290.36x = 209,053,812.78 × 42,334,840.68 - Step 4: Simplify right side
139,378,290.36x = 8,850,259,857,587,848 - Step 5: Solve for x
x = 8,850,259,857,587,848/139,378,290.36 - Step 6: Final answer
x = 63,498,123.24
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.