Finding the Fourth Proportional to 103,980.08, 143,506.68 and 63,696.08
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Solution
The fourth proportional to 103,980.08, 143,506.68 and 63,696.08 is: 87,909.27
Step by Step Solution
- Step 1: Write the proportion equation
103,980.08 : 143,506.68 = 63,696.08 : x - Step 2: Convert to fraction form
103,980.08/143,506.68 = 63,696.08/x - Step 3: Cross multiply
103,980.08x = 143,506.68 × 63,696.08 - Step 4: Simplify right side
103,980.08x = 9,140,812,969.81 - Step 5: Solve for x
x = 9,140,812,969.81/103,980.08 - Step 6: Final answer
x = 87,909.27
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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.