Finding the Fourth Proportional to 137,897.19, 190,303.07 and 77,466.53
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Solution
The fourth proportional to 137,897.19, 190,303.07 and 77,466.53 is: 106,906.59
Step by Step Solution
- Step 1: Write the proportion equation
137,897.19 : 190,303.07 = 77,466.53 : x - Step 2: Convert to fraction form
137,897.19/190,303.07 = 77,466.53/x - Step 3: Cross multiply
137,897.19x = 190,303.07 × 77,466.53 - Step 4: Simplify right side
137,897.19x = 14,742,118,481.25 - Step 5: Solve for x
x = 14,742,118,481.25/137,897.19 - Step 6: Final answer
x = 106,906.59
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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.