Finding the Fourth Proportional to 124,517,289.76, 171,820,810.44 and 72,296,125.63
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Solution
The fourth proportional to 124,517,289.76, 171,820,810.44 and 72,296,125.63 is: 99,761,076.72
Step by Step Solution
- Step 1: Write the proportion equation
124,517,289.76 : 171,820,810.44 = 72,296,125.63 : x - Step 2: Convert to fraction form
124,517,289.76/171,820,810.44 = 72,296,125.63/x - Step 3: Cross multiply
124,517,289.76x = 171,820,810.44 × 72,296,125.63 - Step 4: Simplify right side
124,517,289.76x = 12,421,978,896,989,102 - Step 5: Solve for x
x = 12,421,978,896,989,102/124,517,289.76 - Step 6: Final answer
x = 99,761,076.72
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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.