Finding the Fourth Proportional to 137,888.02, 190,264.74 and 77,447.08
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Solution
The fourth proportional to 137,888.02, 190,264.74 and 77,447.08 is: 106,865.33
Step by Step Solution
- Step 1: Write the proportion equation
137,888.02 : 190,264.74 = 77,447.08 : x - Step 2: Convert to fraction form
137,888.02/190,264.74 = 77,447.08/x - Step 3: Cross multiply
137,888.02x = 190,264.74 × 77,447.08 - Step 4: Simplify right side
137,888.02x = 14,735,448,539.96 - Step 5: Solve for x
x = 14,735,448,539.96/137,888.02 - Step 6: Final answer
x = 106,865.33
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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.