Finding the Fourth Proportional to 154,971,618.68, 213,860,827.14 and 85,357,001.48
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Solution
The fourth proportional to 154,971,618.68, 213,860,827.14 and 85,357,001.48 is: 117,792,658.39
Step by Step Solution
- Step 1: Write the proportion equation
154,971,618.68 : 213,860,827.14 = 85,357,001.48 : x - Step 2: Convert to fraction form
154,971,618.68/213,860,827.14 = 85,357,001.48/x - Step 3: Cross multiply
154,971,618.68x = 213,860,827.14 × 85,357,001.48 - Step 4: Simplify right side
154,971,618.68x = 18,254,518,938,703,004 - Step 5: Solve for x
x = 18,254,518,938,703,004/154,971,618.68 - Step 6: Final answer
x = 117,792,658.39
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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.