Finding the Fourth Proportional to 119,866.65, 165,478.15 and 87,564.99
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Solution
The fourth proportional to 119,866.65, 165,478.15 and 87,564.99 is: 120,885.10
Step by Step Solution
- Step 1: Write the proportion equation
119,866.65 : 165,478.15 = 87,564.99 : x - Step 2: Convert to fraction form
119,866.65/165,478.15 = 87,564.99/x - Step 3: Cross multiply
119,866.65x = 165,478.15 × 87,564.99 - Step 4: Simplify right side
119,866.65x = 14,490,092,549.97 - Step 5: Solve for x
x = 14,490,092,549.97/119,866.65 - Step 6: Final answer
x = 120,885.10
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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.