Finding the Fourth Proportional to 128,115,567.54, 176,799,653.91 and 69,378,334.02
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Solution
The fourth proportional to 128,115,567.54, 176,799,653.91 and 69,378,334.02 is: 95,742,193.39
Step by Step Solution
- Step 1: Write the proportion equation
128,115,567.54 : 176,799,653.91 = 69,378,334.02 : x - Step 2: Convert to fraction form
128,115,567.54/176,799,653.91 = 69,378,334.02/x - Step 3: Cross multiply
128,115,567.54x = 176,799,653.91 × 69,378,334.02 - Step 4: Simplify right side
128,115,567.54x = 12,266,065,443,588,378 - Step 5: Solve for x
x = 12,266,065,443,588,378/128,115,567.54 - Step 6: Final answer
x = 95,742,193.39
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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.