Finding the Fourth Proportional to 158,991.60, 219,397.80 and 87,370.08
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Solution
The fourth proportional to 158,991.60, 219,397.80 and 87,370.08 is: 120,564.88
Step by Step Solution
- Step 1: Write the proportion equation
158,991.60 : 219,397.80 = 87,370.08 : x - Step 2: Convert to fraction form
158,991.60/219,397.80 = 87,370.08/x - Step 3: Cross multiply
158,991.60x = 219,397.80 × 87,370.08 - Step 4: Simplify right side
158,991.60x = 19,168,803,337.82 - Step 5: Solve for x
x = 19,168,803,337.82/158,991.60 - Step 6: Final answer
x = 120,564.88
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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.