Finding the Fourth Proportional to 139,538,739.84, 192,563,463.57 and 77,673,693.03
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Solution
The fourth proportional to 139,538,739.84, 192,563,463.57 and 77,673,693.03 is: 107,189,697.82
Step by Step Solution
- Step 1: Write the proportion equation
139,538,739.84 : 192,563,463.57 = 77,673,693.03 : x - Step 2: Convert to fraction form
139,538,739.84/192,563,463.57 = 77,673,693.03/x - Step 3: Cross multiply
139,538,739.84x = 192,563,463.57 × 77,673,693.03 - Step 4: Simplify right side
139,538,739.84x = 14,957,115,358,129,768 - Step 5: Solve for x
x = 14,957,115,358,129,768/139,538,739.84 - Step 6: Final answer
x = 107,189,697.82
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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.