Finding the Fourth Proportional to 83,430.19, 124,401.09 and 74,157.31
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Solution
The fourth proportional to 83,430.19, 124,401.09 and 74,157.31 is: 110,574.48
Step by Step Solution
- Step 1: Write the proportion equation
83,430.19 : 124,401.09 = 74,157.31 : x - Step 2: Convert to fraction form
83,430.19/124,401.09 = 74,157.31/x - Step 3: Cross multiply
83,430.19x = 124,401.09 × 74,157.31 - Step 4: Simplify right side
83,430.19x = 9,225,250,195.47 - Step 5: Solve for x
x = 9,225,250,195.47/83,430.19 - Step 6: Final answer
x = 110,574.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.