Finding the Fourth Proportional to 109,421.50, 163,968.18 and 84,424.09
Calculator
Solution
The fourth proportional to 109,421.50, 163,968.18 and 84,424.09 is: 126,509.55
Step by Step Solution
- Step 1: Write the proportion equation
109,421.50 : 163,968.18 = 84,424.09 : x - Step 2: Convert to fraction form
109,421.50/163,968.18 = 84,424.09/x - Step 3: Cross multiply
109,421.50x = 163,968.18 × 84,424.09 - Step 4: Simplify right side
109,421.50x = 13,842,864,385.46 - Step 5: Solve for x
x = 13,842,864,385.46/109,421.50 - Step 6: Final answer
x = 126,509.55
Related Problems
Find fourth proportional to 54,710.75, 81,984.09 and 42,212.05
Half scale
Find fourth proportional to 218,843, 327,936.36 and 168,848.18
Double scale
Find fourth proportional to 109,422.50, 163,969.68 and 84,425.09
Similar ratio
Find fourth proportional to 164,132.25, 245,952.27 and 126,636.14
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.