Finding the Fourth Proportional to 121,896,656.97, 168,209,104.89 and 66,896,056.41
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Solution
The fourth proportional to 121,896,656.97, 168,209,104.89 and 66,896,056.41 is: 92,312,012.89
Step by Step Solution
- Step 1: Write the proportion equation
121,896,656.97 : 168,209,104.89 = 66,896,056.41 : x - Step 2: Convert to fraction form
121,896,656.97/168,209,104.89 = 66,896,056.41/x - Step 3: Cross multiply
121,896,656.97x = 168,209,104.89 × 66,896,056.41 - Step 4: Simplify right side
121,896,656.97x = 11,252,525,769,397,046 - Step 5: Solve for x
x = 11,252,525,769,397,046/121,896,656.97 - Step 6: Final answer
x = 92,312,012.89
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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.