Finding the Fourth Proportional to 145,779.28, 201,106.68 and 85,312.90
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Solution
The fourth proportional to 145,779.28, 201,106.68 and 85,312.90 is: 117,691.58
Step by Step Solution
- Step 1: Write the proportion equation
145,779.28 : 201,106.68 = 85,312.90 : x - Step 2: Convert to fraction form
145,779.28/201,106.68 = 85,312.90/x - Step 3: Cross multiply
145,779.28x = 201,106.68 × 85,312.90 - Step 4: Simplify right side
145,779.28x = 17,156,994,080.17 - Step 5: Solve for x
x = 17,156,994,080.17/145,779.28 - Step 6: Final answer
x = 117,691.58
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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.