Finding the Fourth Proportional to 101,423.04, 139,961.12 and 56,102.88
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Solution
The fourth proportional to 101,423.04, 139,961.12 and 56,102.88 is: 77,420.49
Step by Step Solution
- Step 1: Write the proportion equation
101,423.04 : 139,961.12 = 56,102.88 : x - Step 2: Convert to fraction form
101,423.04/139,961.12 = 56,102.88/x - Step 3: Cross multiply
101,423.04x = 139,961.12 × 56,102.88 - Step 4: Simplify right side
101,423.04x = 7,852,221,920.03 - Step 5: Solve for x
x = 7,852,221,920.03/101,423.04 - Step 6: Final answer
x = 77,420.49
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1.5x scale
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.