Finding the Fourth Proportional to 156,693.64, 216,239.76 and 88,708.84
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Solution
The fourth proportional to 156,693.64, 216,239.76 and 88,708.84 is: 122,419.64
Step by Step Solution
- Step 1: Write the proportion equation
156,693.64 : 216,239.76 = 88,708.84 : x - Step 2: Convert to fraction form
156,693.64/216,239.76 = 88,708.84/x - Step 3: Cross multiply
156,693.64x = 216,239.76 × 88,708.84 - Step 4: Simplify right side
156,693.64x = 19,182,378,271.48 - Step 5: Solve for x
x = 19,182,378,271.48/156,693.64 - Step 6: Final answer
x = 122,419.64
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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.