Finding the Fourth Proportional to 121,461,813.12, 167,592,536.95 and 71,877,370.91
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Solution
The fourth proportional to 121,461,813.12, 167,592,536.95 and 71,877,370.91 is: 99,176,116.60
Step by Step Solution
- Step 1: Write the proportion equation
121,461,813.12 : 167,592,536.95 = 71,877,370.91 : x - Step 2: Convert to fraction form
121,461,813.12/167,592,536.95 = 71,877,370.91/x - Step 3: Cross multiply
121,461,813.12x = 167,592,536.95 × 71,877,370.91 - Step 4: Simplify right side
121,461,813.12x = 12,046,110,940,103,028 - Step 5: Solve for x
x = 12,046,110,940,103,028/121,461,813.12 - Step 6: Final answer
x = 99,176,116.60
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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.