Finding the Fourth Proportional to 145,878.63, 201,312.53 and 78,810.63
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Solution
The fourth proportional to 145,878.63, 201,312.53 and 78,810.63 is: 108,758.68
Step by Step Solution
- Step 1: Write the proportion equation
145,878.63 : 201,312.53 = 78,810.63 : x - Step 2: Convert to fraction form
145,878.63/201,312.53 = 78,810.63/x - Step 3: Cross multiply
145,878.63x = 201,312.53 × 78,810.63 - Step 4: Simplify right side
145,878.63x = 15,865,567,316.19 - Step 5: Solve for x
x = 15,865,567,316.19/145,878.63 - Step 6: Final answer
x = 108,758.68
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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.