Finding the Fourth Proportional to 96,775,811.60, 145,163,717.40 and 85,438,403.60
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Solution
The fourth proportional to 96,775,811.60, 145,163,717.40 and 85,438,403.60 is: 128,157,605.40
Step by Step Solution
- Step 1: Write the proportion equation
96,775,811.60 : 145,163,717.40 = 85,438,403.60 : x - Step 2: Convert to fraction form
96,775,811.60/145,163,717.40 = 85,438,403.60/x - Step 3: Cross multiply
96,775,811.60x = 145,163,717.40 × 85,438,403.60 - Step 4: Simplify right side
96,775,811.60x = 12,402,556,275,297,542 - Step 5: Solve for x
x = 12,402,556,275,297,542/96,775,811.60 - Step 6: Final answer
x = 128,157,605.40
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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.