Finding the Fourth Proportional to 138,712,723.48, 207,918,681.99 and 69,458,570.83
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Solution
The fourth proportional to 138,712,723.48, 207,918,681.99 and 69,458,570.83 is: 104,112,543.81
Step by Step Solution
- Step 1: Write the proportion equation
138,712,723.48 : 207,918,681.99 = 69,458,570.83 : x - Step 2: Convert to fraction form
138,712,723.48/207,918,681.99 = 69,458,570.83/x - Step 3: Cross multiply
138,712,723.48x = 207,918,681.99 × 69,458,570.83 - Step 4: Simplify right side
138,712,723.48x = 14,441,734,499,882,660 - Step 5: Solve for x
x = 14,441,734,499,882,660/138,712,723.48 - Step 6: Final answer
x = 104,112,543.81
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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.