Finding the Fourth Proportional to 128,125,652.94, 176,830,992.54 and 78,557,260.68
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Solution
The fourth proportional to 128,125,652.94, 176,830,992.54 and 78,557,260.68 is: 108,419,805.55
Step by Step Solution
- Step 1: Write the proportion equation
128,125,652.94 : 176,830,992.54 = 78,557,260.68 : x - Step 2: Convert to fraction form
128,125,652.94/176,830,992.54 = 78,557,260.68/x - Step 3: Cross multiply
128,125,652.94x = 176,830,992.54 × 78,557,260.68 - Step 4: Simplify right side
128,125,652.94x = 13,891,358,377,267,916 - Step 5: Solve for x
x = 13,891,358,377,267,916/128,125,652.94 - Step 6: Final answer
x = 108,419,805.55
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.