Finding the Fourth Proportional to 142,937.74, 197,485.76 and 121,652.42
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Solution
The fourth proportional to 142,937.74, 197,485.76 and 121,652.42 is: 168,077.53
Step by Step Solution
- Step 1: Write the proportion equation
142,937.74 : 197,485.76 = 121,652.42 : x - Step 2: Convert to fraction form
142,937.74/197,485.76 = 121,652.42/x - Step 3: Cross multiply
142,937.74x = 197,485.76 × 121,652.42 - Step 4: Simplify right side
142,937.74x = 24,024,621,047.10 - Step 5: Solve for x
x = 24,024,621,047.10/142,937.74 - Step 6: Final answer
x = 168,077.53
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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.