Finding the Fourth Proportional to 145,163,246.40, 218,069,272.80 and 121,275,374.40
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Solution
The fourth proportional to 145,163,246.40, 218,069,272.80 and 121,275,374.40 is: 182,184,081.44
Step by Step Solution
- Step 1: Write the proportion equation
145,163,246.40 : 218,069,272.80 = 121,275,374.40 : x - Step 2: Convert to fraction form
145,163,246.40/218,069,272.80 = 121,275,374.40/x - Step 3: Cross multiply
145,163,246.40x = 218,069,272.80 × 121,275,374.40 - Step 4: Simplify right side
145,163,246.40x = 26,446,432,703,955,740 - Step 5: Solve for x
x = 26,446,432,703,955,740/145,163,246.40 - Step 6: Final answer
x = 182,184,081.44
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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.