Finding the Fourth Proportional to 145,900,109.40, 201,346,923.99 and 79,819,074.72
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Solution
The fourth proportional to 145,900,109.40, 201,346,923.99 and 79,819,074.72 is: 110,152,934.34
Step by Step Solution
- Step 1: Write the proportion equation
145,900,109.40 : 201,346,923.99 = 79,819,074.72 : x - Step 2: Convert to fraction form
145,900,109.40/201,346,923.99 = 79,819,074.72/x - Step 3: Cross multiply
145,900,109.40x = 201,346,923.99 × 79,819,074.72 - Step 4: Simplify right side
145,900,109.40x = 16,071,325,170,599,972 - Step 5: Solve for x
x = 16,071,325,170,599,972/145,900,109.40 - Step 6: Final answer
x = 110,152,934.34
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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.