Finding the Fourth Proportional to 138,475,261.13, 207,380,021.99 and 79,208,013.51
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Solution
The fourth proportional to 138,475,261.13, 207,380,021.99 and 79,208,013.51 is: 118,621,618.40
Step by Step Solution
- Step 1: Write the proportion equation
138,475,261.13 : 207,380,021.99 = 79,208,013.51 : x - Step 2: Convert to fraction form
138,475,261.13/207,380,021.99 = 79,208,013.51/x - Step 3: Cross multiply
138,475,261.13x = 207,380,021.99 × 79,208,013.51 - Step 4: Simplify right side
138,475,261.13x = 16,426,159,583,091,980 - Step 5: Solve for x
x = 16,426,159,583,091,980/138,475,261.13 - Step 6: Final answer
x = 118,621,618.40
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.