Finding the Fourth Proportional to 141,920,038.22, 195,849,660.11 and 78,340,394.21
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Solution
The fourth proportional to 141,920,038.22, 195,849,660.11 and 78,340,394.21 is: 108,109,748.07
Step by Step Solution
- Step 1: Write the proportion equation
141,920,038.22 : 195,849,660.11 = 78,340,394.21 : x - Step 2: Convert to fraction form
141,920,038.22/195,849,660.11 = 78,340,394.21/x - Step 3: Cross multiply
141,920,038.22x = 195,849,660.11 × 78,340,394.21 - Step 4: Simplify right side
141,920,038.22x = 15,342,939,577,540,960 - Step 5: Solve for x
x = 15,342,939,577,540,960/141,920,038.22 - Step 6: Final answer
x = 108,109,748.07
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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.