Finding the Fourth Proportional to 159,289.42, 219,820.94 and 87,671.08
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Solution
The fourth proportional to 159,289.42, 219,820.94 and 87,671.08 is: 120,986.94
Step by Step Solution
- Step 1: Write the proportion equation
159,289.42 : 219,820.94 = 87,671.08 : x - Step 2: Convert to fraction form
159,289.42/219,820.94 = 87,671.08/x - Step 3: Cross multiply
159,289.42x = 219,820.94 × 87,671.08 - Step 4: Simplify right side
159,289.42x = 19,271,939,216.42 - Step 5: Solve for x
x = 19,271,939,216.42/159,289.42 - Step 6: Final answer
x = 120,986.94
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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.