Finding the Fourth Proportional to 121,781,696.84, 168,059,990.52 and 66,027,225.08
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Solution
The fourth proportional to 121,781,696.84, 168,059,990.52 and 66,027,225.08 is: 91,118,247.72
Step by Step Solution
- Step 1: Write the proportion equation
121,781,696.84 : 168,059,990.52 = 66,027,225.08 : x - Step 2: Convert to fraction form
121,781,696.84/168,059,990.52 = 66,027,225.08/x - Step 3: Cross multiply
121,781,696.84x = 168,059,990.52 × 66,027,225.08 - Step 4: Simplify right side
121,781,696.84x = 11,096,534,820,166,408 - Step 5: Solve for x
x = 11,096,534,820,166,408/121,781,696.84 - Step 6: Final answer
x = 91,118,247.72
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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.