Finding the Fourth Proportional to 145,865,181.51, 201,294,556.95 and 78,884,139.62
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Solution
The fourth proportional to 145,865,181.51, 201,294,556.95 and 78,884,139.62 is: 108,860,440.65
Step by Step Solution
- Step 1: Write the proportion equation
145,865,181.51 : 201,294,556.95 = 78,884,139.62 : x - Step 2: Convert to fraction form
145,865,181.51/201,294,556.95 = 78,884,139.62/x - Step 3: Cross multiply
145,865,181.51x = 201,294,556.95 × 78,884,139.62 - Step 4: Simplify right side
145,865,181.51x = 15,878,947,935,189,842 - Step 5: Solve for x
x = 15,878,947,935,189,842/145,865,181.51 - Step 6: Final answer
x = 108,860,440.65
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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.