Finding the Fourth Proportional to 97,876.44, 135,130.14 and 87,787.08
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Solution
The fourth proportional to 97,876.44, 135,130.14 and 87,787.08 is: 121,200.57
Step by Step Solution
- Step 1: Write the proportion equation
97,876.44 : 135,130.14 = 87,787.08 : x - Step 2: Convert to fraction form
97,876.44/135,130.14 = 87,787.08/x - Step 3: Cross multiply
97,876.44x = 135,130.14 × 87,787.08 - Step 4: Simplify right side
97,876.44x = 11,862,680,410.59 - Step 5: Solve for x
x = 11,862,680,410.59/97,876.44 - Step 6: Final answer
x = 121,200.57
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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.