Finding the Fourth Proportional to 130,628.14, 180,283.50 and 76,918.13
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Solution
The fourth proportional to 130,628.14, 180,283.50 and 76,918.13 is: 106,156.84
Step by Step Solution
- Step 1: Write the proportion equation
130,628.14 : 180,283.50 = 76,918.13 : x - Step 2: Convert to fraction form
130,628.14/180,283.50 = 76,918.13/x - Step 3: Cross multiply
130,628.14x = 180,283.50 × 76,918.13 - Step 4: Simplify right side
130,628.14x = 13,867,069,689.86 - Step 5: Solve for x
x = 13,867,069,689.86/130,628.14 - Step 6: Final answer
x = 106,156.84
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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.