Finding the Fourth Proportional to 125,132,432.40, 187,698,648.60 and 73,988,125.20
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Solution
The fourth proportional to 125,132,432.40, 187,698,648.60 and 73,988,125.20 is: 110,982,187.80
Step by Step Solution
- Step 1: Write the proportion equation
125,132,432.40 : 187,698,648.60 = 73,988,125.20 : x - Step 2: Convert to fraction form
125,132,432.40/187,698,648.60 = 73,988,125.20/x - Step 3: Cross multiply
125,132,432.40x = 187,698,648.60 × 73,988,125.20 - Step 4: Simplify right side
125,132,432.40x = 13,887,471,112,487,604 - Step 5: Solve for x
x = 13,887,471,112,487,604/125,132,432.40 - Step 6: Final answer
x = 110,982,187.80
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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.