Finding the Fourth Proportional to 210,939,938,813.78, 291,122,070,986.50 and 125,301,242,907.08
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Solution
The fourth proportional to 210,939,938,813.78, 291,122,070,986.50 and 125,301,242,907.08 is: 172,930,539,078.68
Step by Step Solution
- Step 1: Write the proportion equation
210,939,938,813.78 : 291,122,070,986.50 = 125,301,242,907.08 : x - Step 2: Convert to fraction form
210,939,938,813.78/291,122,070,986.50 = 125,301,242,907.08/x - Step 3: Cross multiply
210,939,938,813.78x = 291,122,070,986.50 × 125,301,242,907.08 - Step 4: Simplify right side
210,939,938,813.78x = 36,477,957,332,291,622,535,168 - Step 5: Solve for x
x = 36,477,957,332,291,622,535,168/210,939,938,813.78 - Step 6: Final answer
x = 172,930,539,078.68
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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.