Finding the Fourth Proportional to 156,682.60, 235,124.70 and 86,612.20
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Solution
The fourth proportional to 156,682.60, 235,124.70 and 86,612.20 is: 129,974.02
Step by Step Solution
- Step 1: Write the proportion equation
156,682.60 : 235,124.70 = 86,612.20 : x - Step 2: Convert to fraction form
156,682.60/235,124.70 = 86,612.20/x - Step 3: Cross multiply
156,682.60x = 235,124.70 × 86,612.20 - Step 4: Simplify right side
156,682.60x = 20,364,667,541.34 - Step 5: Solve for x
x = 20,364,667,541.34/156,682.60 - Step 6: Final answer
x = 129,974.02
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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.