Finding the Fourth Proportional to 140,019,349.70, 210,029,024.55 and 121,144,981.70
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Solution
The fourth proportional to 140,019,349.70, 210,029,024.55 and 121,144,981.70 is: 181,717,472.55
Step by Step Solution
- Step 1: Write the proportion equation
140,019,349.70 : 210,029,024.55 = 121,144,981.70 : x - Step 2: Convert to fraction form
140,019,349.70/210,029,024.55 = 121,144,981.70/x - Step 3: Cross multiply
140,019,349.70x = 210,029,024.55 × 121,144,981.70 - Step 4: Simplify right side
140,019,349.70x = 25,443,962,335,578,604 - Step 5: Solve for x
x = 25,443,962,335,578,604/140,019,349.70 - Step 6: Final answer
x = 181,717,472.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.