Finding the Fourth Proportional to 128,454,792.19, 177,267,784.28 and 69,717,457.31
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Solution
The fourth proportional to 128,454,792.19, 177,267,784.28 and 69,717,457.31 is: 96,210,183.93
Step by Step Solution
- Step 1: Write the proportion equation
128,454,792.19 : 177,267,784.28 = 69,717,457.31 : x - Step 2: Convert to fraction form
128,454,792.19/177,267,784.28 = 69,717,457.31/x - Step 3: Cross multiply
128,454,792.19x = 177,267,784.28 × 69,717,457.31 - Step 4: Simplify right side
128,454,792.19x = 12,358,659,183,089,112 - Step 5: Solve for x
x = 12,358,659,183,089,112/128,454,792.19 - Step 6: Final answer
x = 96,210,183.93
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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.