Finding the Fourth Proportional to 155,634,708.96, 214,779,947.76 and 86,021,187.84
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Solution
The fourth proportional to 155,634,708.96, 214,779,947.76 and 86,021,187.84 is: 118,711,477.37
Step by Step Solution
- Step 1: Write the proportion equation
155,634,708.96 : 214,779,947.76 = 86,021,187.84 : x - Step 2: Convert to fraction form
155,634,708.96/214,779,947.76 = 86,021,187.84/x - Step 3: Cross multiply
155,634,708.96x = 214,779,947.76 × 86,021,187.84 - Step 4: Simplify right side
155,634,708.96x = 18,475,626,230,528,348 - Step 5: Solve for x
x = 18,475,626,230,528,348/155,634,708.96 - Step 6: Final answer
x = 118,711,477.37
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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.