Finding the Fourth Proportional to 101,918.19, 140,642.40 and 56,599.08
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Solution
The fourth proportional to 101,918.19, 140,642.40 and 56,599.08 is: 78,104.12
Step by Step Solution
- Step 1: Write the proportion equation
101,918.19 : 140,642.40 = 56,599.08 : x - Step 2: Convert to fraction form
101,918.19/140,642.40 = 56,599.08/x - Step 3: Cross multiply
101,918.19x = 140,642.40 × 56,599.08 - Step 4: Simplify right side
101,918.19x = 7,960,230,448.99 - Step 5: Solve for x
x = 7,960,230,448.99/101,918.19 - Step 6: Final answer
x = 78,104.12
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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.