Finding the Fourth Proportional to 101,284.19, 139,780.36 and 55,966.14
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Solution
The fourth proportional to 101,284.19, 139,780.36 and 55,966.14 is: 77,237.80
Step by Step Solution
- Step 1: Write the proportion equation
101,284.19 : 139,780.36 = 55,966.14 : x - Step 2: Convert to fraction form
101,284.19/139,780.36 = 55,966.14/x - Step 3: Cross multiply
101,284.19x = 139,780.36 × 55,966.14 - Step 4: Simplify right side
101,284.19x = 7,822,967,197.01 - Step 5: Solve for x
x = 7,822,967,197.01/101,284.19 - Step 6: Final answer
x = 77,237.80
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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.