Finding the Fourth Proportional to 130,988.34, 180,753.12 and 77,275.62
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Solution
The fourth proportional to 130,988.34, 180,753.12 and 77,275.62 is: 106,633.99
Step by Step Solution
- Step 1: Write the proportion equation
130,988.34 : 180,753.12 = 77,275.62 : x - Step 2: Convert to fraction form
130,988.34/180,753.12 = 77,275.62/x - Step 3: Cross multiply
130,988.34x = 180,753.12 × 77,275.62 - Step 4: Simplify right side
130,988.34x = 13,967,809,414.93 - Step 5: Solve for x
x = 13,967,809,414.93/130,988.34 - Step 6: Final answer
x = 106,633.99
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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.