Finding the Fourth Proportional to 75,132,221.80, 112,698,332.70 and 75,132,221.80
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Solution
The fourth proportional to 75,132,221.80, 112,698,332.70 and 75,132,221.80 is: 112,698,332.70
Step by Step Solution
- Step 1: Write the proportion equation
75,132,221.80 : 112,698,332.70 = 75,132,221.80 : x - Step 2: Convert to fraction form
75,132,221.80/112,698,332.70 = 75,132,221.80/x - Step 3: Cross multiply
75,132,221.80x = 112,698,332.70 × 75,132,221.80 - Step 4: Simplify right side
75,132,221.80x = 8,467,276,128,906,593 - Step 5: Solve for x
x = 8,467,276,128,906,593/75,132,221.80 - Step 6: Final answer
x = 112,698,332.70
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1.5x scale
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.