Finding the Fourth Proportional to 92,959.80, 139,439.70 and 84,649.20
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Solution
The fourth proportional to 92,959.80, 139,439.70 and 84,649.20 is: 126,973.80
Step by Step Solution
- Step 1: Write the proportion equation
92,959.80 : 139,439.70 = 84,649.20 : x - Step 2: Convert to fraction form
92,959.80/139,439.70 = 84,649.20/x - Step 3: Cross multiply
92,959.80x = 139,439.70 × 84,649.20 - Step 4: Simplify right side
92,959.80x = 11,803,459,053.24 - Step 5: Solve for x
x = 11,803,459,053.24/92,959.80 - Step 6: Final answer
x = 126,973.80
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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.