Finding the Fourth Proportional to 142,543,845.99, 196,710,509.07 and 77,353,749.99
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Solution
The fourth proportional to 142,543,845.99, 196,710,509.07 and 77,353,749.99 is: 106,748,175.86
Step by Step Solution
- Step 1: Write the proportion equation
142,543,845.99 : 196,710,509.07 = 77,353,749.99 : x - Step 2: Convert to fraction form
142,543,845.99/196,710,509.07 = 77,353,749.99/x - Step 3: Cross multiply
142,543,845.99x = 196,710,509.07 × 77,353,749.99 - Step 4: Simplify right side
142,543,845.99x = 15,216,295,539,006,406 - Step 5: Solve for x
x = 15,216,295,539,006,406/142,543,845.99 - Step 6: Final answer
x = 106,748,175.86
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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.