Finding the Fourth Proportional to 156,840.96, 216,416.16 and 93,177.12
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Solution
The fourth proportional to 156,840.96, 216,416.16 and 93,177.12 is: 128,569.95
Step by Step Solution
- Step 1: Write the proportion equation
156,840.96 : 216,416.16 = 93,177.12 : x - Step 2: Convert to fraction form
156,840.96/216,416.16 = 93,177.12/x - Step 3: Cross multiply
156,840.96x = 216,416.16 × 93,177.12 - Step 4: Simplify right side
156,840.96x = 20,165,034,510.26 - Step 5: Solve for x
x = 20,165,034,510.26/156,840.96 - Step 6: Final answer
x = 128,569.95
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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.