Finding the Fourth Proportional to 157,398,239.09, 217,209,955.44 and 87,788,128.61
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Solution
The fourth proportional to 157,398,239.09, 217,209,955.44 and 87,788,128.61 is: 121,147,832.49
Step by Step Solution
- Step 1: Write the proportion equation
157,398,239.09 : 217,209,955.44 = 87,788,128.61 : x - Step 2: Convert to fraction form
157,398,239.09/217,209,955.44 = 87,788,128.61/x - Step 3: Cross multiply
157,398,239.09x = 217,209,955.44 × 87,788,128.61 - Step 4: Simplify right side
157,398,239.09x = 19,068,455,502,453,040 - Step 5: Solve for x
x = 19,068,455,502,453,040/157,398,239.09 - Step 6: Final answer
x = 121,147,832.49
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.