Finding the Fourth Proportional to 156,813.60, 216,434.28 and 93,139.08
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Solution
The fourth proportional to 156,813.60, 216,434.28 and 93,139.08 is: 128,550.65
Step by Step Solution
- Step 1: Write the proportion equation
156,813.60 : 216,434.28 = 93,139.08 : x - Step 2: Convert to fraction form
156,813.60/216,434.28 = 93,139.08/x - Step 3: Cross multiply
156,813.60x = 216,434.28 × 93,139.08 - Step 4: Simplify right side
156,813.60x = 20,158,489,719.66 - Step 5: Solve for x
x = 20,158,489,719.66/156,813.60 - Step 6: Final answer
x = 128,550.65
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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.