Finding the Fourth Proportional to 156,303.60, 215,698.68 and 84,685.44
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Solution
The fourth proportional to 156,303.60, 215,698.68 and 84,685.44 is: 116,865.75
Step by Step Solution
- Step 1: Write the proportion equation
156,303.60 : 215,698.68 = 84,685.44 : x - Step 2: Convert to fraction form
156,303.60/215,698.68 = 84,685.44/x - Step 3: Cross multiply
156,303.60x = 215,698.68 × 84,685.44 - Step 4: Simplify right side
156,303.60x = 18,266,537,623.22 - Step 5: Solve for x
x = 18,266,537,623.22/156,303.60 - Step 6: Final answer
x = 116,865.75
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1.5x scale
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.