Finding the Fourth Proportional to 157,168,117.36, 216,903,465.24 and 91,105,670.80
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Solution
The fourth proportional to 157,168,117.36, 216,903,465.24 and 91,105,670.80 is: 125,732,470.63
Step by Step Solution
- Step 1: Write the proportion equation
157,168,117.36 : 216,903,465.24 = 91,105,670.80 : x - Step 2: Convert to fraction form
157,168,117.36/216,903,465.24 = 91,105,670.80/x - Step 3: Cross multiply
157,168,117.36x = 216,903,465.24 × 91,105,670.80 - Step 4: Simplify right side
157,168,117.36x = 19,761,135,699,534,684 - Step 5: Solve for x
x = 19,761,135,699,534,684/157,168,117.36 - Step 6: Final answer
x = 125,732,470.63
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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.