Finding the Fourth Proportional to 97,309.20, 145,963.80 and 38,125.20
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Solution
The fourth proportional to 97,309.20, 145,963.80 and 38,125.20 is: 57,187.80
Step by Step Solution
- Step 1: Write the proportion equation
97,309.20 : 145,963.80 = 38,125.20 : x - Step 2: Convert to fraction form
97,309.20/145,963.80 = 38,125.20/x - Step 3: Cross multiply
97,309.20x = 145,963.80 × 38,125.20 - Step 4: Simplify right side
97,309.20x = 5,564,899,067.76 - Step 5: Solve for x
x = 5,564,899,067.76/97,309.20 - Step 6: Final answer
x = 57,187.80
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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.