Finding the Fourth Proportional to 140,303.60, 193,623.12 and 76,642.44
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Solution
The fourth proportional to 140,303.60, 193,623.12 and 76,642.44 is: 105,768.84
Step by Step Solution
- Step 1: Write the proportion equation
140,303.60 : 193,623.12 = 76,642.44 : x - Step 2: Convert to fraction form
140,303.60/193,623.12 = 76,642.44/x - Step 3: Cross multiply
140,303.60x = 193,623.12 × 76,642.44 - Step 4: Simplify right side
140,303.60x = 14,839,748,357.21 - Step 5: Solve for x
x = 14,839,748,357.21/140,303.60 - Step 6: Final answer
x = 105,768.84
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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.