Finding the Fourth Proportional to 145,890.08, 201,328.40 and 78,822.08
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Solution
The fourth proportional to 145,890.08, 201,328.40 and 78,822.08 is: 108,774.52
Step by Step Solution
- Step 1: Write the proportion equation
145,890.08 : 201,328.40 = 78,822.08 : x - Step 2: Convert to fraction form
145,890.08/201,328.40 = 78,822.08/x - Step 3: Cross multiply
145,890.08x = 201,328.40 × 78,822.08 - Step 4: Simplify right side
145,890.08x = 15,869,123,251.07 - Step 5: Solve for x
x = 15,869,123,251.07/145,890.08 - Step 6: Final answer
x = 108,774.52
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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.