Finding the Fourth Proportional to 130,971.08, 180,741.30 and 71,355.08
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Solution
The fourth proportional to 130,971.08, 180,741.30 and 71,355.08 is: 98,470.67
Step by Step Solution
- Step 1: Write the proportion equation
130,971.08 : 180,741.30 = 71,355.08 : x - Step 2: Convert to fraction form
130,971.08/180,741.30 = 71,355.08/x - Step 3: Cross multiply
130,971.08x = 180,741.30 × 71,355.08 - Step 4: Simplify right side
130,971.08x = 12,896,809,920.80 - Step 5: Solve for x
x = 12,896,809,920.80/130,971.08 - Step 6: Final answer
x = 98,470.67
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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.