Finding the Fourth Proportional to 128,111,703.58, 176,806,796.79 and 73,115,788.06
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Solution
The fourth proportional to 128,111,703.58, 176,806,796.79 and 73,115,788.06 is: 100,907,004.75
Step by Step Solution
- Step 1: Write the proportion equation
128,111,703.58 : 176,806,796.79 = 73,115,788.06 : x - Step 2: Convert to fraction form
128,111,703.58/176,806,796.79 = 73,115,788.06/x - Step 3: Cross multiply
128,111,703.58x = 176,806,796.79 × 73,115,788.06 - Step 4: Simplify right side
128,111,703.58x = 12,927,368,281,665,128 - Step 5: Solve for x
x = 12,927,368,281,665,128/128,111,703.58 - Step 6: Final answer
x = 100,907,004.75
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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.