Finding the Fourth Proportional to 120,430.28, 165,856.71 and 117,815.09
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Solution
The fourth proportional to 120,430.28, 165,856.71 and 117,815.09 is: 162,255.07
Step by Step Solution
- Step 1: Write the proportion equation
120,430.28 : 165,856.71 = 117,815.09 : x - Step 2: Convert to fraction form
120,430.28/165,856.71 = 117,815.09/x - Step 3: Cross multiply
120,430.28x = 165,856.71 × 117,815.09 - Step 4: Simplify right side
120,430.28x = 19,540,422,386.47 - Step 5: Solve for x
x = 19,540,422,386.47/120,430.28 - Step 6: Final answer
x = 162,255.07
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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.