Finding the Fourth Proportional to 128,454,001.36, 177,268,222.58 and 69,717,370.58
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Solution
The fourth proportional to 128,454,001.36, 177,268,222.58 and 69,717,370.58 is: 96,210,894.44
Step by Step Solution
- Step 1: Write the proportion equation
128,454,001.36 : 177,268,222.58 = 69,717,370.58 : x - Step 2: Convert to fraction form
128,454,001.36/177,268,222.58 = 69,717,370.58/x - Step 3: Cross multiply
128,454,001.36x = 177,268,222.58 × 69,717,370.58 - Step 4: Simplify right side
128,454,001.36x = 12,358,674,365,667,784 - Step 5: Solve for x
x = 12,358,674,365,667,784/128,454,001.36 - Step 6: Final answer
x = 96,210,894.44
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1.5x scale
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.