Finding the Fourth Proportional to 157,155.18, 216,878.75 and 85,539.84
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Solution
The fourth proportional to 157,155.18, 216,878.75 and 85,539.84 is: 118,047.48
Step by Step Solution
- Step 1: Write the proportion equation
157,155.18 : 216,878.75 = 85,539.84 : x - Step 2: Convert to fraction form
157,155.18/216,878.75 = 85,539.84/x - Step 3: Cross multiply
157,155.18x = 216,878.75 × 85,539.84 - Step 4: Simplify right side
157,155.18x = 18,551,773,574.40 - Step 5: Solve for x
x = 18,551,773,574.40/157,155.18 - Step 6: Final answer
x = 118,047.48
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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.