Finding the Fourth Proportional to 156,986.84, 216,565.70 and 93,279.53
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Solution
The fourth proportional to 156,986.84, 216,565.70 and 93,279.53 is: 128,680.50
Step by Step Solution
- Step 1: Write the proportion equation
156,986.84 : 216,565.70 = 93,279.53 : x - Step 2: Convert to fraction form
156,986.84/216,565.70 = 93,279.53/x - Step 3: Cross multiply
156,986.84x = 216,565.70 × 93,279.53 - Step 4: Simplify right side
156,986.84x = 20,201,145,160.89 - Step 5: Solve for x
x = 20,201,145,160.89/156,986.84 - Step 6: Final answer
x = 128,680.50
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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.