Finding the Fourth Proportional to 121,984.68, 168,306.86 and 70,289.07
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Solution
The fourth proportional to 121,984.68, 168,306.86 and 70,289.07 is: 96,980.47
Step by Step Solution
- Step 1: Write the proportion equation
121,984.68 : 168,306.86 = 70,289.07 : x - Step 2: Convert to fraction form
121,984.68/168,306.86 = 70,289.07/x - Step 3: Cross multiply
121,984.68x = 168,306.86 × 70,289.07 - Step 4: Simplify right side
121,984.68x = 11,830,132,208.59 - Step 5: Solve for x
x = 11,830,132,208.59/121,984.68 - Step 6: Final answer
x = 96,980.47
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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.