Finding the Fourth Proportional to 103,215.48, 142,448.74 and 57,897.88
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Solution
The fourth proportional to 103,215.48, 142,448.74 and 57,897.88 is: 79,905.46
Step by Step Solution
- Step 1: Write the proportion equation
103,215.48 : 142,448.74 = 57,897.88 : x - Step 2: Convert to fraction form
103,215.48/142,448.74 = 57,897.88/x - Step 3: Cross multiply
103,215.48x = 142,448.74 × 57,897.88 - Step 4: Simplify right side
103,215.48x = 8,247,480,054.67 - Step 5: Solve for x
x = 8,247,480,054.67/103,215.48 - Step 6: Final answer
x = 79,905.46
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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.