Finding the Fourth Proportional to 103,605,895.74, 142,972,387.92 and 57,195,153.12
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Solution
The fourth proportional to 103,605,895.74, 142,972,387.92 and 57,195,153.12 is: 78,927,242.13
Step by Step Solution
- Step 1: Write the proportion equation
103,605,895.74 : 142,972,387.92 = 57,195,153.12 : x - Step 2: Convert to fraction form
103,605,895.74/142,972,387.92 = 57,195,153.12/x - Step 3: Cross multiply
103,605,895.74x = 142,972,387.92 × 57,195,153.12 - Step 4: Simplify right side
103,605,895.74x = 8,177,327,619,016,437 - Step 5: Solve for x
x = 8,177,327,619,016,437/103,605,895.74 - Step 6: Final answer
x = 78,927,242.13
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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.