Finding the Fourth Proportional to 124,877,539.80, 172,310,447.84 and 78,434,713.98
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Solution
The fourth proportional to 124,877,539.80, 172,310,447.84 and 78,434,713.98 is: 108,226,993.53
Step by Step Solution
- Step 1: Write the proportion equation
124,877,539.80 : 172,310,447.84 = 78,434,713.98 : x - Step 2: Convert to fraction form
124,877,539.80/172,310,447.84 = 78,434,713.98/x - Step 3: Cross multiply
124,877,539.80x = 172,310,447.84 × 78,434,713.98 - Step 4: Simplify right side
124,877,539.80x = 13,515,120,692,096,110 - Step 5: Solve for x
x = 13,515,120,692,096,110/124,877,539.80 - Step 6: Final answer
x = 108,226,993.53
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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.