Finding the Fourth Proportional to 187,430.60, 258,658.80 and 106,865.75
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Solution
The fourth proportional to 187,430.60, 258,658.80 and 106,865.75 is: 147,477.34
Step by Step Solution
- Step 1: Write the proportion equation
187,430.60 : 258,658.80 = 106,865.75 : x - Step 2: Convert to fraction form
187,430.60/258,658.80 = 106,865.75/x - Step 3: Cross multiply
187,430.60x = 258,658.80 × 106,865.75 - Step 4: Simplify right side
187,430.60x = 27,641,766,656.10 - Step 5: Solve for x
x = 27,641,766,656.10/187,430.60 - Step 6: Final answer
x = 147,477.34
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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.