Finding the Fourth Proportional to 128,455,029.16, 177,268,115.30 and 69,717,695.04
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Solution
The fourth proportional to 128,455,029.16, 177,268,115.30 and 69,717,695.04 is: 96,210,514.17
Step by Step Solution
- Step 1: Write the proportion equation
128,455,029.16 : 177,268,115.30 = 69,717,695.04 : x - Step 2: Convert to fraction form
128,455,029.16/177,268,115.30 = 69,717,695.04/x - Step 3: Cross multiply
128,455,029.16x = 177,268,115.30 × 69,717,695.04 - Step 4: Simplify right side
128,455,029.16x = 12,358,724,402,452,370 - Step 5: Solve for x
x = 12,358,724,402,452,370/128,455,029.16 - Step 6: Final answer
x = 96,210,514.17
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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.