Finding the Fourth Proportional to 143,215.96, 197,643.64 and 97,988.80
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Solution
The fourth proportional to 143,215.96, 197,643.64 and 97,988.80 is: 135,228.39
Step by Step Solution
- Step 1: Write the proportion equation
143,215.96 : 197,643.64 = 97,988.80 : x - Step 2: Convert to fraction form
143,215.96/197,643.64 = 97,988.80/x - Step 3: Cross multiply
143,215.96x = 197,643.64 × 97,988.80 - Step 4: Simplify right side
143,215.96x = 19,366,863,111.23 - Step 5: Solve for x
x = 19,366,863,111.23/143,215.96 - Step 6: Final answer
x = 135,228.39
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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.