Finding the Fourth Proportional to 128,455,735.76, 177,269,089.54 and 69,718,402.72
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Solution
The fourth proportional to 128,455,735.76, 177,269,089.54 and 69,718,402.72 is: 96,211,490.29
Step by Step Solution
- Step 1: Write the proportion equation
128,455,735.76 : 177,269,089.54 = 69,718,402.72 : x - Step 2: Convert to fraction form
128,455,735.76/177,269,089.54 = 69,718,402.72/x - Step 3: Cross multiply
128,455,735.76x = 177,269,089.54 × 69,718,402.72 - Step 4: Simplify right side
128,455,735.76x = 12,358,917,774,357,458 - Step 5: Solve for x
x = 12,358,917,774,357,458/128,455,735.76 - Step 6: Final answer
x = 96,211,490.29
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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.