Finding the Fourth Proportional to 77,262,337,458.40, 115,893,506,187.60 and 76,772,561,432.80
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Solution
The fourth proportional to 77,262,337,458.40, 115,893,506,187.60 and 76,772,561,432.80 is: 115,158,842,149.20
Step by Step Solution
- Step 1: Write the proportion equation
77,262,337,458.40 : 115,893,506,187.60 = 76,772,561,432.80 : x - Step 2: Convert to fraction form
77,262,337,458.40/115,893,506,187.60 = 76,772,561,432.80/x - Step 3: Cross multiply
77,262,337,458.40x = 115,893,506,187.60 × 76,772,561,432.80 - Step 4: Simplify right side
77,262,337,458.40x = 8,897,441,323,450,109,001,728 - Step 5: Solve for x
x = 8,897,441,323,450,109,001,728/77,262,337,458.40 - Step 6: Final answer
x = 115,158,842,149.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.