Finding the Fourth Proportional to 144,838,950.42, 199,881,539.76 and 78,763,313.18
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Solution
The fourth proportional to 144,838,950.42, 199,881,539.76 and 78,763,313.18 is: 108,695,432.20
Step by Step Solution
- Step 1: Write the proportion equation
144,838,950.42 : 199,881,539.76 = 78,763,313.18 : x - Step 2: Convert to fraction form
144,838,950.42/199,881,539.76 = 78,763,313.18/x - Step 3: Cross multiply
144,838,950.42x = 199,881,539.76 × 78,763,313.18 - Step 4: Simplify right side
144,838,950.42x = 15,743,332,315,017,502 - Step 5: Solve for x
x = 15,743,332,315,017,502/144,838,950.42 - Step 6: Final answer
x = 108,695,432.20
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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.