Finding the Fourth Proportional to 156,985.80, 235,478.70 and 143,207.70
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Solution
The fourth proportional to 156,985.80, 235,478.70 and 143,207.70 is: 214,811.55
Step by Step Solution
- Step 1: Write the proportion equation
156,985.80 : 235,478.70 = 143,207.70 : x - Step 2: Convert to fraction form
156,985.80/235,478.70 = 143,207.70/x - Step 3: Cross multiply
156,985.80x = 235,478.70 × 143,207.70 - Step 4: Simplify right side
156,985.80x = 33,722,363,025.99 - Step 5: Solve for x
x = 33,722,363,025.99/156,985.80 - Step 6: Final answer
x = 214,811.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.