Finding the Fourth Proportional to 121,513,354.68, 167,687,818.38 and 65,758,734.84
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Solution
The fourth proportional to 121,513,354.68, 167,687,818.38 and 65,758,734.84 is: 90,746,723.39
Step by Step Solution
- Step 1: Write the proportion equation
121,513,354.68 : 167,687,818.38 = 65,758,734.84 : x - Step 2: Convert to fraction form
121,513,354.68/167,687,818.38 = 65,758,734.84/x - Step 3: Cross multiply
121,513,354.68x = 167,687,818.38 × 65,758,734.84 - Step 4: Simplify right side
121,513,354.68x = 11,026,938,784,748,498 - Step 5: Solve for x
x = 11,026,938,784,748,498/121,513,354.68 - Step 6: Final answer
x = 90,746,723.39
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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.