Finding the Fourth Proportional to 156,698.10, 235,147.95 and 86,627.70
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Solution
The fourth proportional to 156,698.10, 235,147.95 and 86,627.70 is: 129,997.28
Step by Step Solution
- Step 1: Write the proportion equation
156,698.10 : 235,147.95 = 86,627.70 : x - Step 2: Convert to fraction form
156,698.10/235,147.95 = 86,627.70/x - Step 3: Cross multiply
156,698.10x = 235,147.95 × 86,627.70 - Step 4: Simplify right side
156,698.10x = 20,370,326,068.22 - Step 5: Solve for x
x = 20,370,326,068.22/156,698.10 - Step 6: Final answer
x = 129,997.28
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.