Finding the Fourth Proportional to 154,691,222,247.42, 213,473,896,967.01 and 86,101,163,386.69
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Solution
The fourth proportional to 154,691,222,247.42, 213,473,896,967.01 and 86,101,163,386.69 is: 118,819,611,187.45
Step by Step Solution
- Step 1: Write the proportion equation
154,691,222,247.42 : 213,473,896,967.01 = 86,101,163,386.69 : x - Step 2: Convert to fraction form
154,691,222,247.42/213,473,896,967.01 = 86,101,163,386.69/x - Step 3: Cross multiply
154,691,222,247.42x = 213,473,896,967.01 × 86,101,163,386.69 - Step 4: Simplify right side
154,691,222,247.42x = 18,380,350,881,550,382,923,776 - Step 5: Solve for x
x = 18,380,350,881,550,382,923,776/154,691,222,247.42 - Step 6: Final answer
x = 118,819,611,187.45
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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.