Finding the Fourth Proportional to 156,487.68, 215,953.10 and 84,867.68
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Solution
The fourth proportional to 156,487.68, 215,953.10 and 84,867.68 is: 117,117.45
Step by Step Solution
- Step 1: Write the proportion equation
156,487.68 : 215,953.10 = 84,867.68 : x - Step 2: Convert to fraction form
156,487.68/215,953.10 = 84,867.68/x - Step 3: Cross multiply
156,487.68x = 215,953.10 × 84,867.68 - Step 4: Simplify right side
156,487.68x = 18,327,438,585.81 - Step 5: Solve for x
x = 18,327,438,585.81/156,487.68 - Step 6: Final answer
x = 117,117.45
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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.