Finding the Fourth Proportional to 86,746.80, 129,925.80 and 71,194.80
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Solution
The fourth proportional to 86,746.80, 129,925.80 and 71,194.80 is: 106,632.65
Step by Step Solution
- Step 1: Write the proportion equation
86,746.80 : 129,925.80 = 71,194.80 : x - Step 2: Convert to fraction form
86,746.80/129,925.80 = 71,194.80/x - Step 3: Cross multiply
86,746.80x = 129,925.80 × 71,194.80 - Step 4: Simplify right side
86,746.80x = 9,250,041,345.84 - Step 5: Solve for x
x = 9,250,041,345.84/86,746.80 - Step 6: Final answer
x = 106,632.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.