Finding the Fourth Proportional to 211,701.60, 292,155.12 and 121,024.80
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Solution
The fourth proportional to 211,701.60, 292,155.12 and 121,024.80 is: 167,018.18
Step by Step Solution
- Step 1: Write the proportion equation
211,701.60 : 292,155.12 = 121,024.80 : x - Step 2: Convert to fraction form
211,701.60/292,155.12 = 121,024.80/x - Step 3: Cross multiply
211,701.60x = 292,155.12 × 121,024.80 - Step 4: Simplify right side
211,701.60x = 35,358,014,966.98 - Step 5: Solve for x
x = 35,358,014,966.98/211,701.60 - Step 6: Final answer
x = 167,018.18
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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.