Finding the Fourth Proportional to 153,463,728.60, 211,873,795.74 and 99,869,458.68
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Solution
The fourth proportional to 153,463,728.60, 211,873,795.74 and 99,869,458.68 is: 137,880,927.84
Step by Step Solution
- Step 1: Write the proportion equation
153,463,728.60 : 211,873,795.74 = 99,869,458.68 : x - Step 2: Convert to fraction form
153,463,728.60/211,873,795.74 = 99,869,458.68/x - Step 3: Cross multiply
153,463,728.60x = 211,873,795.74 × 99,869,458.68 - Step 4: Simplify right side
153,463,728.60x = 21,159,721,289,030,692 - Step 5: Solve for x
x = 21,159,721,289,030,692/153,463,728.60 - Step 6: Final answer
x = 137,880,927.84
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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.