Finding the Fourth Proportional to 153,358.05, 211,628.93 and 86,277.09
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Solution
The fourth proportional to 153,358.05, 211,628.93 and 86,277.09 is: 119,059.47
Step by Step Solution
- Step 1: Write the proportion equation
153,358.05 : 211,628.93 = 86,277.09 : x - Step 2: Convert to fraction form
153,358.05/211,628.93 = 86,277.09/x - Step 3: Cross multiply
153,358.05x = 211,628.93 × 86,277.09 - Step 4: Simplify right side
153,358.05x = 18,258,727,808.83 - Step 5: Solve for x
x = 18,258,727,808.83/153,358.05 - Step 6: Final answer
x = 119,059.47
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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.