Finding the Fourth Proportional to 143,877,368,271.68, 198,553,119,845.28 and 78,770,709,995.84
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Solution
The fourth proportional to 143,877,368,271.68, 198,553,119,845.28 and 78,770,709,995.84 is: 108,704,867,276.76
Step by Step Solution
- Step 1: Write the proportion equation
143,877,368,271.68 : 198,553,119,845.28 = 78,770,709,995.84 : x - Step 2: Convert to fraction form
143,877,368,271.68/198,553,119,845.28 = 78,770,709,995.84/x - Step 3: Cross multiply
143,877,368,271.68x = 198,553,119,845.28 × 78,770,709,995.84 - Step 4: Simplify right side
143,877,368,271.68x = 15,640,170,222,101,813,264,384 - Step 5: Solve for x
x = 15,640,170,222,101,813,264,384/143,877,368,271.68 - Step 6: Final answer
x = 108,704,867,276.76
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1.5x scale
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.