Finding the Fourth Proportional to 97,998.90, 135,239.31 and 55,558.14
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Solution
The fourth proportional to 97,998.90, 135,239.31 and 55,558.14 is: 76,670.70
Step by Step Solution
- Step 1: Write the proportion equation
97,998.90 : 135,239.31 = 55,558.14 : x - Step 2: Convert to fraction form
97,998.90/135,239.31 = 55,558.14/x - Step 3: Cross multiply
97,998.90x = 135,239.31 × 55,558.14 - Step 4: Simplify right side
97,998.90x = 7,513,644,518.48 - Step 5: Solve for x
x = 7,513,644,518.48/97,998.90 - Step 6: Final answer
x = 76,670.70
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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.